Top 5 Custom Foam Inserts for EVA Cases Benefits and Applications

When it comes to product protection and presentation, custom EVA cases have become a ideal solution for industries worldwide. But what truly enhances their functionality is what's inside, the correct foam insert. At Yisi Packing, we understand that a well designed foam insert can make all the difference in protecting, organizing, and showcasing your products.

In this article, we’ll explore the top 5 custom foam insert types used in EVA cases, their unique benefits, and where they are commonly applied.

1. PU Foam (Polyurethane Foam)

Best for: Lightweight, shock absorbing protection

Industries: Consumer electronics, medical tools, retail packaging

PU foam is soft, flexible, and highly shock absorbent, making it ideal for items that require gentle cushioning. Its spongy texture allows for a snug fit around irregularly shaped products. It’s also affordable and lightweight, perfect for consumer products like cameras, beauty tools, and medical devices.

Benefits:

Lightweight and flexible
Absorbs shock and vibration
Cost effective for high volume packaging

2. PE Foam (Polyethylene Foam)

Best for: Durable, rigid support and reusable packaging
Industries: Tools, drones, instrumentation, industrial kits

PE foam is firmer than PU foam, offering better structure and durability. It’s ideal for heavier items or equipment that need to be stored or transported repeatedly. PE foam inserts also resist moisture and chemicals, which is a major plus for industrial and outdoor applications.

Benefits:

High durability and impact resistance
Good for repeated use
Water and chemical resistant

3. EVA Foam

Best for: Premium protection and branding
Industries: Luxury products, electronics, promotional kits

EVA foam is the same material as the outer shell of your case, offering a cohesive, high quality look and feel. It’s semi rigid, meaning it holds its shape well while still providing excellent shock absorption. EVA foam is also great for custom color matching and CNC, excellent for premium product packaging or promotional kits.

Benefits:

Premium look and feel
Excellent customization (color, logo, shape)
Long lasting structural integrity

4. Die Cut Foam Inserts

Best for: Custom fit protection for unique or complex products
Industries: Medical devices, instrumentation, collectibles

Die cut foam can be created from PU, PE, or EVA and is precision cut to fit your product’s exact shape. This ensures maximum protection and eliminates shifting during transit. It's perfect for high value or sensitive products that demand a tailored fit.

Benefits:

Perfectly fits any shape
Offers maximum protection
Enhances presentation and unboxing experience

5. Pick and Pluck Foam (DIY Foam)

Best for: Low volume or adjustable storage
Industries: Hobbyists, toolkits, DIY, samples

Pick and pluck foam allows users to remove foam blocks manually to fit their items. While not suitable for high end or mass market products, it’s great for prototypes, sample kits, or adjustable storage cases where product sizes may vary.

Benefits:

Flexible layout without tooling
Cost effective for small runs
Easy to customize on the spot

Choosing the Right Foam Insert

Each type of foam insert offers specific advantages depending on your product's size, weight, fragility, and usage. At Yisi Packing, we work with clients to develop custom EVA case solutions with the perfect foam insert to ensure functionality, durability, and an enhanced user experience.

Need help designing your next custom EVA case with foam inserts?

👉 Contact us today for a free consultation or sample!

What We Really Do to Test EVA Case Durability and Quality

At Yisi Packing, we don’t just design custom EVA cases that look good, we build them to last. For many of our clients, durability isn’t a luxury; it’s a requirement. Whether you're transporting precision medical devices, expensive electronics, or delicate beauty tools, protection is everything.

That’s why our commitment to quality goes beyond materials and design. It includes different testing to ensure every custom EVA case meets the highest standards in performance, durability, and reliability.

Here’s a behind the scenes look at how we test our EVA cases before they reach your hands.

🧪 1. Drop Test: Simulating Real World Accidents

In reality, cases get dropped. Whether it’s in shipping, in a warehouse, or by an end user, impacts happen. We simulate this by dropping cases from various heights and angles onto hard surfaces to test shock absorption.

Our custom EVA shells, combined with carefully designed foam interiors, are engineered to distribute and minimize impact, protecting the contents inside. We analyze:

Case integrity after impact
Zipper and hinge performance
Internal foam displacement

💪 2. Compression Test: Handling the Pressure

If your case is going to be stacked, squeezed, or stored under pressure, it needs to hold its shape. Our compression tests apply controlled weight and pressure to the case to see how it reacts. We monitor:

Deformation of the EVA shell
Foam memory retention
Structural performance over repeated tests

This is especially important for industries like medical devices, tools, and electronics, where even slight pressure damage could affect function.

🌊 3. Water Resistance Testing: Protecting Against Moisture

While EVA cases aren’t fully waterproof, many of our clients require a level of water resistance. It is especially in outdoor or high humidity environments. We conduct splash and soak tests to evaluate:

Zipper sealing and water entry
Moisture protection of inner contents
Dry time and Structural integrity

Want better moisture protection? We offer water resistant zippers, custom seals, and coated materials upon request.

🔄 4. Temperature & Aging Tests: Built for the Long Haul

Temperature extremes can warp or weaken lower quality materials. Not ours.

We expose cases to hot and cold temperature cycles to simulate real world transport and storage conditions, it is from frozen warehouses to hot delivery trucks. We also conduct aging simulations to assess:

UV resistance
Material discoloration
Long term flexibility of zippers and joints

✅ Why This Matters for You

Your product deserves packaging that performs under pressure. Our durability testing isn’t just about checking boxes, but it’s about protecting your investment, minimizing returns, and ensuring your customers have the best possible experience.

At Yisi Packing, every custom EVA case is built on design, functionality, and proven performance.

Looking for a custom case that’s tested to protect?

Let’s talk. Our engineering and sales teams are ready to help design a solution that fits your product, and stands up to the real world.

📩 [Contact Us] | 🌐 www.packingyisi.com

Why a Product Warranty Matters When Choosing a Custom EVA Case Manufacturer

In today's competitive market, choosing the right custom EVA case manufacturers is about more than just price or design. But it's about reliability, durability, and trust. At Yisi Packing, we understand that our customers need more than just a protective case. They need confidence in the product they’re investing in. That’s why we proudly offer a product warranty on all our custom EVA cases.

What is a Product Warranty?

A product warranty is a promise from the manufacturer to the customer that the product will meet certain standards of quality and performance. If the product fails due to manufacturing defects within the warranty period, the manufacturer agrees to repair or replace it.

At Yisi Packing, our warranty covers manufacturing defects, including faulty zippers, seams, or materials, ensuring that our customers receive high quality EVA cases that perform as expected.

Why Is a Warranty Important?

Builds Trust with Customers
A product warranty signals that the manufacturer stands behind their product. It reassures customers that they are buying from a reliable source who values quality and long term performance.

Protects Your Investment
Whether you're purchasing cases for consumer electronics, medical devices, or industrial tools, a warranty gives you peace of mind that your purchase is protected.

Reflects Manufacturer Confidence
Offering a warranty shows that the manufacturer is confident in their quality control and materials. At Yisi Packing, our EVA cases go through strict quality inspections to ensure they meet both international standards and your custom requirements.

Enhances Your Brand Image
If you're an OEM or brand looking to include custom EVA cases with your products, offering your customers a product backed by a manufacturer’s warranty improves your own brand reputation.

What Does Yisi Packing’s Warranty Cover?

Our standard product warranty covers:

Material defects (e.g., EVA shell, lining, foam inserts)
Zipper and stitching failures
Manufacturing workmanship

The EVA foam case warranty period is typically 9 months from the date of delivery, but we also offer flexible warranty terms for large or long term clients. Damage caused by misuse or unauthorized modification is not covered, but we’re always happy to help troubleshoot any product issues.

Why Choose Yisi Packing?

Yisi Packing has been manufacturing high quality custom EVA cases in China for over a decade. We offer full OEM/ODM services, competitive pricing, low MOQs, and fast production times. Most importantly, we back every product with our commitment to quality, demonstrated by our product warranty and long term customer partnerships.

When selecting a custom EVA case supplier, make sure you're not only getting the best design and price, but also the product cases warranty. At Yisi Packing, we’re committed to delivering EVA cases that meet your expectations, and backing them with a warranty that proves it.

Contact us today to learn more about our custom EVA case solutions and warranty policies.

Classification of dropper bottles

1. Classification by Bottle Material: Glass, Plastic, Metal

Glass dropper bottles: Their primary advantage is their chemical inertness, meaning they won't react with the contents. They're ideal for storing active ingredients (such as vitamin C serums and retinol serums) or corrosive liquids (essential oils and pharmaceutical solvents).

Clear glass dropper bottles: Suitable for products that don't require light protection (such as regular toners and serums), making it easier to see how much is left.

Dark glass dropper bottles (amber, cobalt blue): With built-in UV protection, they effectively block UV rays, preventing oxidation and deterioration of ingredients, making them the best choice for light-sensitive products.

Plastic dropper bottles: Their primary advantages are lightness, drop resistance, and low cost, making them suitable for daily use and various office settings. However, care should be taken with the material to avoid chemical intrusion.

PP dropper bottles: They offer excellent heat resistance (can withstand temperatures ranging from -20°C to 120°C) and are chemically stable. They are commonly used to store basic skincare products (lotions, serums) or children's skincare products.

PET dropper bottles: They offer high transparency and a glass-like texture, but have poor corrosion resistance and are suitable for liquids without strong active ingredients.

HDPE dropper bottles: They are hard and resistant to pressure, making them suitable for topical medications or low-concentration industrial reagents.

Metal dropper bottle: mainly made of aluminum and stainless steel, with good texture and sealing. Because metal may react with acidic/alkaline liquids, its application range is relatively small.

2. Classification by dropper tip type:

Standard rubber-tipped droppers: The most common combination is a nitrile rubber or silicone tip with a glass or PP tube.

Integrated plastic droppers: The dropper and tip are injection-molded into one piece using materials such as TPE, offering cost control and design flexibility.

Screw-on dropper tips: The dropper tip itself is threaded and screws directly onto the bottle (no outer cap required). An internal sealing ring is required.

Anti-backflow droppers: A special internal valve prevents liquid from flowing back into the bottle when the tip is released, causing contamination or air bubbles. These require high technical requirements and come at a high cost.

Quantitative droppers: Special features (such as scales and flow-restriction mechanisms) allow for more precise, fixed dispensing of liquid.

3. Classification by Capacity:

Common capacities include 5ml, 10ml, 15ml, 20ml, 30ml, and 50ml. The smaller the capacity, the higher the precision required for the dropper.

Skincare dropper bottles: Dropper capacities typically range from 0.5ml to 2ml, allowing for a single application (e.g., 1ml of serum) to minimize contamination from repeated contact. These bottles often feature a threaded cap with a silicone seal for enhanced sealing. Some high-end models utilize a vacuum dropper design (without a straw) to completely isolate the bottle from air and extend the shelf life of the serum. Capacities under 30ml are suitable for small serums, while 50ml is suitable for lotions.

Pharmaceutical dropper bottles: Medicinal dropper bottles must meet pharmaceutical standards (such as USP and GMP certification). Sterility and accurate dosing are paramount.

Mostly made of borosilicate glass or food-grade PP, they can be sterilized at high temperatures (e.g., 121°C).

Droppers feature graduated scales (e.g., 0.1ml, 0.5ml) to ensure accurate dosing (e.g., for children's fever-reducing medications and eye drops).

Some come with dust caps to prevent contamination of the dropper tip. Suitable for use with oral drops, topical disinfectants, and ophthalmology/ENT reagents.

Essential Oil/Aromatherapy Dropper Bottles: These dropper bottles offer two key advantages, addressing the volatility and photophobia of essential oils:

They are almost always made of dark glass (primarily amber), which blocks UV rays;

The dropper has a thin diameter (approximately 2mm), allowing for precise droplet delivery (1 drop x 0.05ml), thus minimizing essential oil waste (which can lead to higher unit prices).

Common sizes include 5ml, 10ml (suitable for single essential oils), and 30ml (suitable for blends or aromatherapy blends).

Mostly made of borosilicate glass (resistant to strong acids and alkalis) or PTFE (extremely chemically resistant).

Highly accurate graduations (e.g., ±0.05ml) make them suitable for sampling laboratory reagents.

Various sizes available: 10ml, 25ml, 50ml, and 100ml (suitable for different experimental volumes).

What Countertop Water Purifiers Remove from Your Tap Water？

Real Stories Behind the Water We Drink

In Flint, Michigan, a seemingly small decision in 2014—to switch its water supply to the Flint River—led to a devastating health crisis. Without proper corrosion control, the aging pipes leached lead into the drinking water, exposing over 99,000 residents to toxic contamination. That number was so large that the CDC eventually declared a state of emergency. The fallout was profound—children suffered developmental damage, and the crisis became a nationwide wake-up call [1].

Meanwhile, in Europe, hard water is a more common complaint. In Italy and Germany, mineral-rich water causes scale build-up in kettles and coffee machines, frustrating households and damaging appliances.

These everyday inconveniences highlight a key truth: Tap water quality varies widely, and “safe” doesn’t always mean “ideal.” Different regions face various local water usage issues, but they all make people gradually realize that household drinking water may require an additional layer of protection.

That is why in recent years, countertop water purifiers have gained increasing attention in the global market. They are not merely tools for removing impurities from water but also represent a choice people make for their health and quality of life.

Global Water Concerns That Shape Behavior

USA: In some older urban areas, lead pipes are still in use today. According to data from the U.S. Environmental Protection Agency (EPA), long-term consumption of water with excessive lead levels can affect children's neurological development [2].

Europe: The issue of hard water is widespread. Households in countries such as Germany and Italy often need to remove limescale; otherwise, the lifespan of appliances like kettles and dishwashers can be affected.

Southeast Asia: After heavy rains, areas in Southeast Asia often face spikes in bacterial levels due to runoff breaching municipal systems. Such threats may not make headlines globally, but drive local awareness dramatically.

Japan & Korea: Although tap water meets high safety standards, many people are dissatisfied with its taste—especially when brewing tea or cooking rice, where a "softer" water quality is often preferred.

It is evident that water-related challenges are not exclusive to developing countries but represent a global issue.

What Countertop Purifiers Can Do?

• Remove Unwanted Elements—Subtly and Effectively

1. Remove Residual Chlorine & Odors

Chlorination is one of the most common methods of tap water disinfection worldwide, but it often leaves behind a sharp, unpleasant smell. The activated carbon filter inside a countertop water purifier can absorb most residual chlorine, improving the overall taste. Many coffee lovers find that brewing with filtered water brings out the distinct flavors of different coffee beans more effectively.

2. Heavy Metals

The story of Flint shows us how close heavy metal contamination can be—it may be hiding in the pipelines we cannot see. The RO (reverse osmosis) membrane inside the PU-T01 countertop water purifier removes most harmful substances such as lead, mercury, and arsenic. This is especially important for households with infants and young children, as their tolerance to heavy metals is far lower than that of adults. Using a countertop purifier helps protect children from the risks of heavy metal contamination, safeguarding the entire family’s drinking water safety.

3. Reduce Microbial Risks

According to the World Health Organization (WHO), millions of people worldwide still contract diarrheal diseases each year due to contaminated water. While municipal water systems are generally disinfected, contamination can still occur during transmission. A countertop water purifier equipped with a UV sterilization module provides an additional barrier, eliminating 99.9% of bacteria and ensuring safer drinking water at home [3].

4. Filter Microplastics

A study analyzing 1,148 tap water samples across 34 countries found that 87% of the samples contained microplastics, indicating widespread contamination of urban tap water systems globally. These tiny particles come from fabric fibers, plastic packaging, and even airborne dust. The precision of a reverse osmosis membrane is high enough to intercept most microplastics, reducing their entry into the human body [4].

Lifestyle Upgrades, Not Just Water Cleaning

When people think of water purifiers, they often focus only on what they “filter out.” In reality, the benefits go far beyond that.

Better taste in beverages: In Italy, many coffee shops install water purifiers to ensure hard water doesn’t spoil the flavor of coffee.

Cooking quality: In Japan, families often use soft water for cooking rice, as it makes the grains fluffier and tastier.

Long-term health: Parents today prefer preparing baby formula with purified water to ensure infant health, while seniors are more concerned about heavy metal and mineral excess in tap water.

Environmental responsibility: Compared with bottled water, using a countertop purifier significantly reduces plastic waste and supports a sustainable lifestyle.

In short, a countertop purifier is not just protection against “pollution”—it’s a proactive choice to enhance quality of life.

Countertop Water Purifiers—The Future of Household Consumption

With global awareness of health and sustainability rising, countertop water purifiers are becoming a household essential.

Three key drivers are behind this growth:

Health consciousness: More consumers are prioritizing safe drinking water, viewing a countertop purifier as a long-term investment in well-being.

Convenience: This PU-T01 countertop RO water purifier is easy to install, stylish in design, and kitchen-friendly, they meet the needs of anyone seeking filtered water.

Eco-friendliness: By replacing bottled water, they actively reduce plastic pollution.

It is foreseeable that more households will treat countertop water purifiers as a standard kitchen appliance—just as natural as having a dishwasher or oven.

Behind Every Glass of Water—Trust and Quality

Water is something we rely on every single day, yet the hidden risks in tap water are often overlooked. Whether it’s families in the U.S. worried about lead, or European residents troubled by hard water, the ultimate goal is the same: to enjoy safer, purer water, more conveniently.

That’s exactly why we create countertop water purifiers. The next time you turn on the tap, consider this: how long did it take for that glass of water to reach you? What harmful substances has it left behind? And how much everyday quality has it quietly added to your life?

Relative Information

[1] https://www.cdc.gov/lead-prevention/success-stories-by-state/flint-lead-exposure-registry.html

[2] https://www.epa.gov/ground-water-and-drinking-water/lead-service-lines

[3] https://www.who.int/news-room/fact-sheets/detail/drinking-water

[4] https://pubmed.ncbi.nlm.nih.gov/38649043/

Drive In Racks vs Shuttle Racking vs Mobile Racking Which Is Best for You?

Choosing the right warehouse racking system can make or break your storage efficiency and operational costs. Whether you're expanding your current warehouse or designing a new facility, understanding the differences between drive-in racks, shuttle racking, and mobile racking is crucial for maximizing your investment.

What is Drive-In Racking?

Drive-in racking is a high-density storage system that allows forklifts to drive directly into the rack structure to store and retrieve pallets. This system operates on a Last-In-First-Out (LIFO) principle, making it ideal for storing large quantities of similar products with longer storage periods.

drive in racking

How Drive-In Racking Works

The system consists of continuous rails that support pallets at multiple levels. Forklifts enter the rack structure through entry points and travel along guide rails to place or retrieve pallets. The structural framework includes uprights, rails, and bracing that create drive lanes typically 10-12 feet wide.

Drive-in racks can be configured as either drive-in (single entry point) or drive-through (entry and exit points at opposite ends) depending on your operational requirements. The LIFO system means the last pallet stored is the first one retrieved, which works perfectly for products with longer shelf lives or seasonal inventory.

Key Features:

LIFO system (Last In, First Out)
Eliminates aisles between racks
Reduces pick faces by up to 75%
Cost-effective for high-volume, low-SKU operations
Requires specialized forklift training

What is Mobile Racking?

Mobile racking systems mount entire rack structures on motorized bases that move along rails. These systems eliminate fixed aisles by creating a single working aisle that moves between rack rows as needed.

Mobile Racking

How Mobile Racking Works

The system operates through electric motors, mechanical hand wheels, or hydraulic systems that move entire rack sections along rails embedded in the warehouse floor. When access is needed to specific products, the relevant racks separate to create a working aisle exactly where it's required.

Mobile racking systems can be configured with various control options, from simple mechanical systems to sophisticated computerized controls with safety sensors and automatic positioning.

Key Features:

Highest space utilization – up to 95% floor usage
Maintains 100% pallet selectivity
Reduces building footprint requirements
Energy-efficient motor systems
Ideal for slow-moving inventory

What is Shuttle Racking?

Shuttle racking represents the evolution of high-density storage into the semi-automated realm. This system combines the space efficiency of drive-in racking with radio-controlled shuttle cars that move pallets within the rack structure, eliminating the need for forklifts to enter the racking system.

radio shuttle racking

How Shuttle Racking Operates

The shuttle system uses battery-powered carts that run on rails within each storage level. These shuttles are controlled via radio frequency and can move pallets deep into the rack structure. Forklifts only need to place pallets at the face of the rack and position the shuttle car at the appropriate level.

The shuttle car receives commands through a remote control or warehouse management system integration. It can operate in both FIFO (First-In-First-Out) and LIFO modes, providing flexibility that traditional drive-in racks cannot offer.

Key Features:

Semi-automated operation with remote control
FIFO (First In, First Out) or LIFO capability
Faster throughput than drive-in systems
Reduced product damage and forklift wear
Scalable automation levels

Key Difference for these racking system

Feature	Drive-In Racking	Shuttle Racking	Mobile Racking
Storage Density	High (60-75% floor usage)	High (65-80% floor usage)	Highest (85-95% floor usage)
Selectivity	Limited (LIFO only)	Good (FIFO/LIFO options)	Excellent (100% selectivity)
Operating Speed	Moderate	Fast	Slow to moderate
Investment Cost	Lowest	Moderate to high	Highest
Maintenance	Minimal	Regular (shuttle carts)	Moderate (motors/rails)
Product Damage Risk	Higher	Lower	Lowest
Automation Potential	None	High	Moderate

How to Choose the Right Dynamic Racking System

After two decades in this industry, I've developed a proven framework for making this critical decision:

1. Analyze Your Inventory Profile

High-volume, few SKUs: Drive-in racking excels

Medium variety, fast turnover: Shuttle racking wins

High variety, slow turnover: Mobile racking dominates

2. Evaluate Your Throughput Requirements

Low to moderate throughput: Drive-in works perfectly

High throughput needs: Shuttle racking delivers speed

Selective access priority: Mobile racking ensures 100% accessibility

3. Consider Your Budget Reality

Budget-conscious operations should start with drive-in racking. Growing businesses with increasing throughput demands benefit from shuttle systems. Premium operations requiring maximum space efficiency justify mobile racking investments.

4. Assess Your Labor Situation

Experienced forklift operators: Drive-in systems work well

Labor shortage concerns: Shuttle racking reduces operator dependency

Minimal daily activity: Mobile racking handles low-frequency access efficiently

Practical Examples

Case Study 1: Cold Storage Facility

A frozen food distributor with limited SKUs but massive volumes chose drive-in racking. Result: 40% increase in storage capacity with minimal investment. The LIFO system worked perfectly for their product rotation needs.

Case Study 2: E-commerce Fulfillment Center

An online retailer with 200+ SKUs and daily picking requirements implemented shuttle racking. Outcome: 60% faster throughput and 30% reduction in product damage compared to their previous drive-in system.

Case Study 3: Pharmaceutical Warehouse

A pharmaceutical company with strict FIFO requirements and premium real estate costs chose mobile racking. Achievement: 90% floor utilization while maintaining complete lot traceability and access to every pallet.

Making Your Final Decision

The best racking system isn't always the most expensive or technologically advanced – it's the one that perfectly matches your operational needs. Here's my expert recommendation process:

Start with drive-in racking if you're dealing with high-volume, low-variety inventory and have budget constraints. It's the proven workhorse of high-density storage.

Upgrade to shuttle racking when throughput becomes your bottleneck and you need faster, safer operations. The automation capabilities make it future-ready for growing businesses.

Invest in mobile racking when space is your most expensive resource and you need maximum flexibility with complete selectivity.

Conclusion

After 20 years of helping businesses optimize their warehouse operations, I can confidently say there's no universal best choice – only the best choice for your specific situation. Drive-in racking offers unbeatable value for simple, high-volume storage. Shuttle racking delivers the perfect balance of density, speed, and automation. Mobile racking provides ultimate flexibility for complex inventory management needs.

If you plan on set up a warehouse for new business like retail, wholesale,logistic and more, choose a trustworthy racking system manufacturer is essential. Heda Shelves is leading warehouse racking system factory in China since 2001. We Offer OEM&ODM Service for your storage needs in factory price. Contact us Today.

FAQ

Q: Can I mix different racking systems in the same warehouse?

A: Absolutely! Many of my clients use hybrid approaches – drive-in for fast-moving bulk items, mobile for slow-movers, and shuttle for medium-velocity products.

Q: Do I need special forklifts for these systems?

A: Drive-in requires reach trucks or specialized narrow-aisle forklifts. Shuttle and mobile systems work with standard counterbalance forklifts.

Q: How do I handle maintenance for automated systems?

A: Shuttle systems require scheduled maintenance contracts with manufacturers. Mobile systems need regular rail cleaning and motor servicing, typically manageable in-house.

Transparent self-sealing food packaging bags help ensure food export safety and beauty

With the rapid development of global food trade, food packaging must not only ensure safety, but also be aesthetically pleasing and convenient.

Our company specializes in the production and export of resealable plastic food bags, providing high-quality packaging solutions for global food export companies.

Our food-grade plastic packaging bags are made from safe and environmentally friendly PE, PET, and CPP materials that meet international food contact standards.

They are widely used for packaging nuts, dried fruits, candies, seasonings, tea, and baked goods. The transparent design allows consumers to easily view the contents,

boosting purchasing confidence. The self-sealing zipper allows for repeated opening and closing, extending food freshness.

In addition, we provide custom printing services (custom printed ziplock bags), customers can print brand logos, ingredient descriptions and QR codes on the bag,

which not only enhances the product image but also increases market recognition. We support different thicknesses, sizes and styles, suitable for retailers, food processing plants and e-commerce sellers.

Leveraging advanced production technology and rigorous quality control, our products are FDA and SGS certified and are popular in markets such as the United States,

Canada, Europe, the Middle East, and Southeast Asia. We also offer eco-friendly biodegradable ziplock bags to meet international green packaging needs.

We adhere to the core advantages of "high quality + fast delivery + professional foreign trade services" to help customers reduce procurement costs and improve market competitiveness.

If you are looking for a long-term and reliable food packaging supplier (plastic packaging supplier), we will be your best partner.

Why Does an Air Conditioner Have Compressor Delay Protection?

Air conditioners have been indispensable home appliances in our daily lives. But have you ever noticed that sometimes we shut off the air conditioner, and if we restart it immediately, the air conditioner will not work quickly; instead, it will delay for a period and then start to work? This is not a malfunction but a protection mechanism.

I. What is the compressor delay protection?

The compressor delay protection is a safety setting inside of the air conditioner. Its function is to forbid the compressor from restarting immediately after it turns off for a period. Normally the period lasts 3 to 10 minutes.

air conditioner outdoor

II. Why does the air conditioner need compressor delay protection?

To protect the compressor and extend its lifespan

The compressor is the most important part in the air conditioning system. When the compressor stops its work, there is still high-pressure, high-temperature refrigerant inside. If it restarts immediately, then the compressor will overburden the mechanical stress and liquid shock pressure, resulting in damage to the motor or other components inside the compressor.
The compressor delay protection allows refrigerant and oil pressures to return to equilibrium, reducing the risk of damage.
Avoid current shock

The compressor needs high starting current to operate. (3-5 times higher than operation current) If under frequent start-ups, it will lead to a current surge and break the electric components and even trigger fuses or circuit breakers.
Ensure cooling/heating stability

The circulation of refrigerant and oil needs time, and the compressor delay protection can keep the pressure and temperature back to normal.
The protection mechanism could avoid issues caused by short-term frequent start-ups, such as unstable refrigerant circulation, large temperature fluctuation, and low cooling efficiency.

III. Misunderstandings about the delay

The air conditioner is not sensitive enough

Some people regard the situation as a malfunction; actually, it is a normal design for every aircon unit.
The shorter the delay, the better the air conditioner

In fact, a shorter delay will increase the risk of the compressor being damaged, while too long a delay will influence the using experience. The compressor manufacturer had already designed the delay under the best performance.

The compressor delay protection is an essential safety feature in air conditioner design. It protects the compressor, reduces current surges, and maintains system stability. Understanding this feature not only helps prevent misconceptions but also allows you to use your air conditioner more effectively, extending its lifespan.

Why is There a Strange Smell in the Long-time Air-conditioned Room?

In summer and winter, an air conditioner has become our lifesaver. But many people think that after running the air conditioner for a period, a musty, sour, or unpleasant smell spreads in the room. It not only influences comfort but also indicates a low air quality. So why is there a strange smell in the long-time air-conditioned room?

1. Mold growth

The indoor evaporator produces condensate water when cooling; if the drainage system is bad, it will create a wet environment.

Mold and bacteria reproduce here, bringing smells into the room when the air is supplied. This is often the cause of a musty smell when the air conditioner is turned on.

2. Dust accumulation on filter and vent

Dust, pollen, hair, and other impurities in the air accumulate on the filter.

When these impurities combine with humidity, they ferment and produce a sour, rancid smell. Impellers and air ducts that haven't been cleaned for a long time can also contribute to the smell.

3. Low air quality

Long-time air conditioning means the room is closed. Carbon dioxide from human breath, formaldehyde from the furniture, and smells from the pets all will accumulate inside the room.

The air conditioner can cool and heat the indoor air but cannot supply fresh air. The indoor air will be more and more muddy.

4. Drainage pipe or parts failure

If the drainage pipe is clogged, the condensate will go backward and produce a rotten smell. What's more, on old air conditioners, the plastic or insulation parts will produce smells as well.

5. How to prevent air conditioner odor?

Keep regular cleaning: clean the filter and prepare an annual deep maintenance.

Keep the AC dry: Run the air conditioning units for a while before shutting them down.

Ventilate the room frequently: ventilate at least twice a day for at least 15 minutes each time.

Choose a self-cleaning air conditioner: Use frost-melting water to flush the evaporator for a cleaner and more worry-free experience.

A strange air conditioning smell is not a small issue; it affects our air quality and health. Most of the time, if we do better on cleaning, ventilation, and drying the air conditioner, we shall improve the air quality.

Why Are Central Air Conditioners More Popular in The High-end Market?

I. Market positioning of central air conditioning

For the central air conditioners, the initial installation cost is higher, but the overall experience is better. It is more popular in villas, large apartments, high-end apartments, and commercial real estate.

II. Reasons why central air conditioning is favored in the high-end market

1. Greater comfort

Central air conditioning can avoid uneven heating and cooling by having multiple air outlets and a uniform air supply. The temperature control is more precise, providing a higher level of comfort for the human body.

2. Aesthetics and space utilization

Hidden installation, with the air outlet embedded in the ceiling, does not disrupt the overall decoration style. It does not occupy indoor space and enhances the overall quality of the living environment.

3. Energy saving and intelligence

The multi-connected system can be opened on demand to avoid simultaneous energy consumption of multiple hanging machines. Combined with a smart home system, remote control and energy-saving management are realized.

4. Service life and maintenance advantages

It has a longer design life and is more stable in long-term use. Regular maintenance is more professional and ensures the long-term operation of the system.

III. The quality of life represented by central air conditioning

1. Reflect the life grade

Central air conditioning is not merely a refrigeration device; it is also a symbol of a comfortable, healthy, and quality life.

2. Meet personalized demands

The airflow plan can be customized according to the size and function of the room to create a personalized and comfortable environment.

3. It conforms to the lifestyle of high-end people.

Users who have higher demands for comfort, aesthetics, and intelligence are more inclined to choose central air conditioning.

IV. Future development trends

With the development of green energy conservation and smart homes, central air conditioning is expected to further penetrate the mid-range market.

Although household air conditioners have dominated the market due to their price and convenience, central air conditioners are gradually becoming the first choice for high-end users with their comfort, energy efficiency, aesthetic appeal, and sense of quality.

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