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.

We are a professional air conditioner manufacturer in China. If you want to consult any air conditioner-related questions, please feel free to contact us.

Gym Air Conditioning Recommendations How to Balance Energy Conservation and Comfort?

Gyms have a large flow of people and high exercise intensity and thus have much higher requirements for indoor temperature and air quality than ordinary places. To create a comfortable exercise environment while controlling high energy consumption costs, it is particularly important to choose suitable air conditioners.

I. Special Requirements for Air Conditioning in Gyms

1. High human flow environment: The human body has a large amount of heat dissipation during exercise, which requires rapid cooling and ventilation.

2. Humidity Control: Sweat evaporation increases indoor humidity, so the air conditioner needs to have a dehumidification function.

3. Regarding air circulation: cold air should be kept from blowing directly, and air circulation should be maintained in a uniform condition.

II. How to Balance "Comfort"

1. Optimal Temperature Setting: The exercise area is recommended to maintain a temperature of 22–26℃, avoiding excessive coldness or stuffiness.

2. Air supply mode optimization: Select large air volume, wide-angle air supply, or duct machine design so that the cooling air coverage is uniform.

3. Noise control: The equipment operates quietly, without affecting the fitness atmosphere or the course experience.

III. How to Achieve "Energy-Saving Effects"

1. Air Conditioner Inverter Technology: By intelligently adjusting the operating load, it avoids energy waste caused by frequent startup and shutdown of equipment.

2. Partitioned Control: Areas like the strength training zone, cardio zone, and yoga zone allow for separate temperature regulation, which effectively cuts down on wasteful energy use.

3. Energy-saving Mode Setting: Operate at full power during peak hours and automatically reduce power when there is low foot traffic.

IV. Air conditioning type recommendation

Type of Air Conditioning	Recommended For	Key Features
Central Air Conditioning System	Large gyms	Flexible temperature zones; efficient air circulation
Floor Ceiling Air Conditioner	Small to medium gyms	Energy-saving; easy to manage
Ducted Air Conditioner	All gym sizes (high comfort areas)	Uniform airflow; avoids direct blow on people

The air conditioning system in a gym should not only address the issue of "coolness," but also take into account both comfort and energy efficiency. Only by choosing the right model, scientifically controlling zones, and doing a good job in maintenance can a healthy, environmentally friendly, and comfortable exercise environment be created for the gym.

We are a professional air conditioner manufacturer in China. If you have any questions related to air conditioners, please contact us freely.

Glass bottle manufacturing process and supplier selection

For skincare brands, the texture and quality of glass bottles directly impact product premiums, and the manufacturing process is crucial to determining quality. Currently, mainstream glass bottle manufacturing processes primarily focus on blowing, tubing, and drawing. Different processes correspond to different product characteristics, necessitating distinct considerations when selecting suppliers.

1.The blowing process is an excellent representative of high-end skin care glass bottles. The blowing process is mainly used to manufacture bottles with complex shapes, thick walls, and high-end appearance. It is especially suitable for customized bottles, such as irregular essential oil bottles and retro cream jars.

When selecting a blow-molded bottle supplier, focus on three key aspects:

Mold development capabilities. A good supplier should possess independent mold design and processing capabilities, accurately reproducing details such as bottle body texture and bottle neck curvature based on the design draft, and maintain a mold-making cycle within 15-20 days to avoid delays in product launch.

High-end pigment reserves determine visual quality, and the addition of metal oxides creates premium colors like amber, cobalt blue, and emerald green. Suppliers must have a stable pigment supply chain to ensure consistent color during mass production, pass sun and abrasion resistance tests, and resist fading over time.

Small-batch flexible production capacity is adapted to the needs of start-up brands. Many start-up brands only need 500-1000 units in the trial production stage. Suppliers need to support small-batch customization and ensure that the wall thickness and sealing of each batch of products are consistent to avoid cost waste due to high production capacity thresholds.

2. The controlled process is more suitable for standardized, small-volume glass bottles, such as 10-30ml serum bottles and sample bottles. Because the process flow is relatively fixed, supplier selection should focus on three key points:

The source of the glass bottles directly affects the basic quality. Suppliers using high borosilicate glass are preferred. This type of glass is resistant to temperature fluctuations and corrosion, and can prevent essential oils and other ingredients from reacting with the glass. It is also important to confirm whether the glass bottles meet FDA, REACH, and other compliance standards.

The accuracy of flame processing determines the safety of the bottle mouth. The bottle mouth of the control bottle needs to be flame polished. High-quality suppliers can ensure that the bottle mouth is free of burrs, has uniform wall thickness, feels smooth when rubbed with fingers, and has clear sealing threads, and does not leak after being matched with the bottle cap.

The level of aseptic workshop is a rigid requirement for skin care product packaging, especially for sterile essences and ampoules. Suppliers must have a Class 10,000 aseptic workshop and be able to provide workshop inspection reports to ensure that there is no microbial contamination during the production process and to avoid product deterioration.

3.The drawing process mainly produces large-scale, low-cost conventional glass bottles, such as 100-200ml toner bottles and lotion bottles. When selecting a supplier, you need to pay attention to the scale production capacity:

The scale of the melting cellar determines the stability of production capacity. Large melting cellars can produce 50,000 to 100,000 pieces of glass per day, which can meet the long-term supply needs of established brands and avoid stock outs during peak seasons. At the same time, the raw material utilization rate of the melting cellar must be confirmed to reduce glass waste and lower costs.

The degree of automation impacts product consistency. Highly automated production lines can precisely control bottle height, diameter, and wall thickness to within ±0.1mm, eliminating dimensional deviations caused by manual production and ensuring the proper fit of the cap.

Environmental certification doesn't directly impact product quality, but it does impact compliance across the entire supply chain. Suppliers must be ISO 14001 certified and meet standards for wastewater and exhaust gas treatment during production to avoid production halts due to environmental issues, which could impact delivery times.

In short, blown bottles rely on customization capabilities, tube-formed bottles on detail precision, and drawn bottles on scale efficiency. When selecting a supplier, you must first clarify the process requirements for your product, then conduct targeted verification of key dimensions. If necessary, request samples for sealing and drop resistance testing. Compliance documents and production cycles must also be verified. Only then can you select a partner that meets your quality requirements while also aligning with your cost and production needs.

Are plastic bags really only disposable?

In the eyes of many people, plastic bags are equivalent to "disposable, throw away after use", but is this really the case? During the export process, we found that more and more customers began to pay attention to the "reusable value". For example, products such as hand-held bread bags, zipper bags, printed T-shirt bags, etc. are not only beautiful, but can also be used multiple times, greatly reducing waste.

Especially in the European and American markets, environmental awareness is strong, but customers are not against plastics, but are more concerned about the "product life cycle". We have been studying how to improve the durability and multi-scenario use of bags through design.

This can't help but make us think: Should we look at plastic bags from a different perspective? Turn it from a "packaging tool" to a "brand carrier"? If the bags become more fashionable and practical, and customers are more willing to keep them for reuse, plastic will no longer be the "culprit" but a "representative of transformation."

What do you think? Welcome to leave a message to discuss together!

Customizable plastic T-shirt bags to help upgrade brand packaging

In today's competitive global market, plastic T-shirt bags are not only a tool for daily shopping, but also an important medium for brand display.

Our company specializes in exporting customized plastic bags, among which T-shirt bags are particularly popular and widely used in supermarkets, retail stores, clothing stores and fast food chains.

We are printed plastic bags manufacturer.We offer a variety of sizes, thicknesses and colors. Customers can customize them according to different market needs

(custom printed plastic T-shirt bags), bulk T-shirt bags,including printing LOGO,slogans and QR codes. Our products are made of environmentally friendly PE materials,

which meet the import and export standards of the EU and American markets,with stable quality, strong load-bearing capacity and not easy to break.

We have advanced film blowing, bag making and automated printing equipment, with a daily production capacity of millions of bags, and can quickly respond to large-volume orders.

Through strict quality control processes, we ensure that each batch of products meets export packaging standards.

Our **plastic shopping bags with handles** are at the industry leading level in packaging accuracy and aesthetics.

Our products are widely exported to the United States, France, Chile, the United Arab Emirates and other places, and our customer groups include large supermarket chains,

clothing brands, e-commerce platforms and food packagers.

We can provide small batch sampling services to help customers quickly produce samples and seize the opportunity during the market testing stage.

At the same time, in response to the global environmental protection trend,

we have also launched a series of biodegradable T-shirt bags made of recyclable materials to help customers meet local environmental regulations.

Choosing us means choosing a supplier with a professional foreign trade team, a stable production system and many years of export experience.

Customization with drawings and samples is welcome. We support small batch orders and OEM services. We look forward to working with you to make your brand packaging more competitive!

How Custom Packaging Enhances Brand Value

In today’s competitive market, custom packaging is no longer just a protective layer—it’s an extension of your brand.

Think about the unboxing experience: a well-designed, branded package can create excitement, build anticipation, and leave a lasting impression on your customers. Whether it’s a sleek plastic bag with your logo or a thoughtfully printed paper pouch, packaging sets the tone before the product is even seen.

Custom packaging communicates your brand values. Are you eco-friendly? Minimalist? Bold and colorful? Your packaging reflects your identity. It helps customers remember your business, builds loyalty, and even encourages sharing on social media.

For retailers, custom printed plastic bags, zipper pouches, or gift bags turn ordinary packaging into brand ambassadors. Each bag someone carries down the street becomes free advertising.

At [Your Company Name], we specialize in creating durable, eye-catching, and customizable plastic packaging that helps brands stand out—while staying cost-effective and practical for daily use.

Plastic bag export trends and market opportunities in 2025

With the rise of global e-commerce and the continuous upgrading of packaging demand, the plastic bag export market has ushered in new opportunities.

1. Global market status
According to market research, the global plastic bag and packaging bag market size is expected to exceed US$200 billion in 2025, 
of which China accounts for about 38.6%, the Asia-Pacific region is growing rapidly, and the e-commerce packaging demand in Southeast Asia has surged by 27%. 
Europe and North America are promoting the transformation of environmentally friendly materials due to carbon tariffs and plastic restriction policies.

2. Segmented product performance
Supermarket shopping bags are still the mainstream, but the proportion of industrial packaging bags has increased to 29%. 
The market penetration rate of degradable plastic bags has jumped from 12% in 2023 to 21% in 2025. At the same time, 
the demand for functional bags such as food grade and medical grade continues to grow.



3. Export opportunities and challenges
The rise of Southeast Asia: low labor costs and relaxed environmental protection policies have become a new hot spot for brand procurement.

Compliance pressure: The EU and the United States impose taxes on disposable plastics, 
and exporters need to improve the environmental performance and compliance capabilities of their products.

Breakthrough in the high-end market: The report shows that China's exports to the European high-end market increased by 14.3%, 
while the export volume decreased slightly, indicating that high value-added products have greater growth potential.

4. Recommended strategies
Focus on special categories: Strengthen the production capacity layout of food bags, medical bags, and large industrial bags;

Investment in environmentally friendly materials: Introduce degradable materials such as PBAT and PLA to meet the needs of the international high-end market;

Strengthening technology and certification capabilities: Promote water-based printing, thickness standards, 
automated production and environmental protection label certification, such as the EU carbon tariff standard.


This provides a clear direction for foreign trade companies: penetrating the Southeast Asian market, deepening their presence in high-end application areas, 
and embracing the benefits of environmental protection policies will be the way to gain market voice in the next 2-3 years.

Sustainable Innovation in Plastic Bag Exports Balancing Quality and Responsibility

In today’s global market, the plastic bag export industry faces increasing pressure to balance cost efficiency, durability, and environmental responsibility. As a leading exporter, we want to share how our company innovates in this complex landscape—and invite a deeper conversation with partners and stakeholders.

1. High‑Performance Packaging Meets Eco Awareness

Our factory produces a wide range of products including custom printed stand‑up pouches, zipper-seal food bags, lightweight T-shirt bags, and industrial-grade heavy-duty PE sacks. Innovations like multilayer structures, barrier coatings, and advanced recyclable film technologies enhance durability and shelf appeal.

2. Embracing Green Materials

Organic materials such as PLA (polylactic acid) and PBAT blend films allow us to offer biodegradable and compostable plastic bags. These eco-friendly options maintain the strength and clarity of traditional plastics, while meeting current EU and US brand standards.

3. Custom OEM Solutions Empower Brand Influence

For overseas clients launching private label brands, we deliver OEM services including bespoke logo printing, color match, sizing, and packaging design with small-batch flexibility. This approach helps brands align packaging performance with their sustainability values.

4. Facilitating the Recycling Economy

We actively collaborate with logistics and waste-processing partners to support plastic bag take-back, recycling center collection, and pilot closed-loop initiatives. Thoughtful packaging design—like easy-peel seals and recyclable plastic types—simplifies end-of-life recycling and higher PCR (post-consumer recycled) rates.

Let’s talk:

Which markets in Southeast Asia or Europe are showing strong interest in eco-material packaging?
Are your clients asking for traceability or recycled-content certification?
Want to explore a case study on compostable zip-lock bags in the US supermarket sector?

Feel free to reach out—we’re ready to customize a sustainable plastic bag solution that boosts your brand impact and opens new export opportunities.