Advantages and Application of Small Water Chillers

Advantages of Small Water Chillers:

Space-saving: Compact design with a small footprint, suitable for installation in limited spaces.

Efficient Cooling: Utilizes advanced technology to rapidly reduce water temperature and provide stable cooling effects.

Eco-Friendly and Energy-Efficient: Uses environmentally friendly refrigerants with low energy consumption, aligning with green development concepts.

Stable and Reliable: High-quality components and manufacturing processes ensure long-term stable operation.

Easy Maintenance: Simple structure and convenient maintenance, reducing operational costs.

Applications of Small Water Chillers:

1. Laboratory Applications:

In scientific research laboratories, precision instruments and equipment require a stable temperature environment to ensure accurate experimental results. TEYU Water Cooled Chillers can be the ideal cooling devices, offering temperature control accuracy of ±0.1℃, small size and large cooling capacity, meeting the usage requirements of dust-free workshops or enclosed laboratory environments. These small water-cooled chillers are stable in performance, low in noise, and have a long service life.

2. Medical Equipment Applications:

In the medical field, many high-end medical devices, such as magnetic resonance imaging machines(MRI Equipment) and laser surgical equipment, generate a significant amount of heat during operation. If this heat is not promptly dissipated, it can affect the performance and lifespan of the equipment. TEYU CWUP Water Chillers offer temperature control accuracy of ±0.1℃, small size, and large cooling capacity of up to 4000W, satisfying the usage requirements of medical equipment.

3. Industrial Production Line Applications:

Many industrial equipment and processes require operation within specific temperature ranges. TEYU S&A's industrial small chillers, such as the CW series water chiller, can be configured according to various industrial production equipment. By selecting an industrial chiller with the appropriate cooling capacity based on the equipment's power and required cooling capacity, accurate temperature control can be provided for these equipment and processes, ensuring product quality and production efficiency. Simultaneously, their stability and reliability reduce the risk of failures during the production process.

4. Laser Equipment Applications:

Laser equipment generally requires stable cooling from chillers to ensure the stable operation of the lasers. Depending on the specific laser equipment, various small chillers, high-power chillers, and chillers with precise temperature control accuracy can be selected, such as TEYU Fiber Laser Chiller, TEYU CO2 Laser Chiller, TEYU UV Laser Chillers, TEYU Ultrafast Laser Chillers, TEYU Handheld Laser Welder Chillers, and more. With over 120 chiller models, they meet the needs of various laser equipment in the market.

In summary, small water chillers have found widespread applications in various fields due to their advantages of high efficiency, stability, and environmental friendliness. With the continuous development and advancement of technology, as well as the increasing awareness of environmental protection, it is believed that small water chillers will play an even more significant role in the future. If you are also searching for a reliable cooling device for your equipment, please feel free to send an email to sales@teyuchiller.com to get your exclusive cooling solutions now!

Source: https://www.teyuchiller.com/advantages-and-application-of-small-water-chillers

CO2 laser glass tube vs CO2 laser metal tube, which is better?

CO2 laser belongs to gas laser and its wavelength is about 10.6um which belongs to infrared spectrum. The common CO2 laser tube includes CO2 laser glass tube and CO2 laser metal tube. You may know that CO2 laser is a very common laser source in laser cutting machine, laser engraving machine and laser marking. But when it comes to choosing the laser source for your laser machine, do you really know which one is better?

Well, let’s take a look at them one by one.

CO2 laser glass tube

It also known as CO2 laser DC tube. As its name suggests, CO2 laser glass tube is made from hard glass and it is normally a 3-layer design. The inner layer is discharge tube, the middle layer is water cooling layer and the outer layer is gas storage layer. The length of the discharge tube is related to the power of the laser tube. Generally speaking, the higher the laser power, the longer the discharge tube will be needed. There are small holes on both sides of the discharge tube and they are connected to the gas storage tube. When it is working, CO2 can circulate in the discharge tube and the gas storage tube. Therefore, the gas can be exchanged in time.

Features of CO2 laser DC tube:

1.Since it uses glass as its shell, it is easy to crack or explode when it receives heat and vibrates. Therefore, there is certain risk in the operation;

2.It is a traditional gas-moving style laser with high energy consumption and big size and requiring high pressure power supply. Under certain circumstances, high pressure power supply will lead to improper contact or poor ignition;

3.CO2 laser DC tube has short lifespan. The life span in theory is around 1000 hours and day by day the laser energy will decrease. Therefore, it is hard to guarantee the consistency of the product processing performance. Besides, it is quite complicated and time consuming to change out the laser tube, so it is easy to cause delay in the production;

4.The peak power and the pulse modulation frequency of the CO2 laser glass tube are pretty low. And those are the key features in material processing. Therefore, it is hard to improve the efficiency, accuracy and the performance;

5.The laser power is not stable, causing big difference between actual laser output value and theoretical value. Therefore, it requires to work under big electrical current every day and precision processing can not be done.

CO2 laser metal tube

It is also known as CO2 laser RF tube. It is made from metal and its tube and electrode are also made from compressed aluminum. The clear aperture (i.e. where plasma and laser light is generated) and the working gas are stored in the same tube. This kind of design is reliable and doesn’t require high manufacturing cost.

Features of CO2 laser RF tube:

1.The CO2 laser RF tube is the revolution in laser design and production. It is small in size but powerful in function. It uses direct current instead of high pressure power supply;

2.The laser tube has a metal and sealed design without maintenance. The CO2 laser can work over 20,000 hours continuously. It is a durable and reliable industrial laser source. It can be installed on the workstation or small processing machine and has more powerful processing ability than CO2 laser glass tube. And it is pretty easy to change out the gas. After changing out the gas, it can be used for another 20,000 hours. Therefore, the total lifespan of the CO2 laser RF tube could reach more than 60,000 hours;

3.The peak power and the pulse modulation frequency of the CO2 laser metal tube is pretty high, which guarantees the efficiency and accuracy of material processing. The light spot of it can be pretty small;

4.The laser power is pretty stable and remains the same under long-term working.

From the above illustration, their differences are quite clear:

1.Size
CO2 laser metal tube is more compact than CO2 laser glass tube;

2.Life span

CO2 laser metal tube has longer life than CO2 laser glass tube. And the former only requires gas changing out while the latter requires the whole tube changing out.

3.Cooling method
CO2 laser RF tube can use air cooling or water cooling while CO2 laser DC tube often uses water cooling.

4.Light spot
The light spot for CO2 laser metal tube is 0.07mm while the one for CO2 laser glass tube is 0.25mm.

5.Price
Under the same power, CO2 laser metal tube is more expensive than CO2 laser glass tube.

But either CO2 laser DC tube or CO2 laser RF tube, it requires efficient cooling to work normally. The most ideal way is to add a CO2 laser cooling system. S&A Teyu CW series CO2 laser cooling systems are very popular among the laser machine users due to superior cooling and offering different stability and refrigeration capacity to choose. Among those, small water chillers CW-5000 and CW-5200 are the most popular ones, for they are compact in size but not having powerful cooling performance at the same time. Go check out the complete CO2 laser cooling system models at https://www.teyuchiller.com/co2-laser-chillers_c1

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

Hard to engrave the jade? UV laser marking machine could help !

Jade can become beautiful artwork after careful engraving. During the engraving process, the designer needs to put so much effort and time into it, since most of the engraving job is done manually. But if mass production of jade is needed, it would become more difficult. So anything can help speed up the engraving efficiency while maintaining the excellent effect of manual engraving? Well, the answer is UV laser marking machine.

UV laser marking machine is able to leave permanent marking on the surface of the jade. It uses short wavelength laser to break the molecular bond of the jade so that the expected patterns or characters of the jade will reveal. 

UV laser marking machine doesn’t involve heat treatment in the operation. Therefore, UV laser processing is also known as cold processing. As we know, jade is easy to crack when it meets heat, so it would be perfect to use UV laser marking machine to do the engraving job. 

The unique features of UV laser marking machine include:

1. UV laser source has high laser beam quality and small focal spot. Therefore, the marking can be more delicate and more clear.

2. Since UV laser marking machine has small heat affecting zone, the jade won’t deform or get burned;

3.High marking efficiency

With the above-mentioned features, UV laser marking machine is not only suitable for engraving on jade but also suitable for other non-metal materials. 

UV laser marking machine often comes with 3W-30W UV laser source. The UV laser source of this range is sensitive to the temperature. To maintain the delicate effect of the UV laser marking machine, a small water chiller would be ideal. S&A Teyu CWUL, RMUP and CWUP series small water chillers are applicable to cool UV lasers from 3W to 30W and the temperature stability offers ±0.1℃ and ±0.2℃ for selection. For detailed chiller models of S&A Teyu small water chillers for cooling UV lasers, click https://www.teyuchiller.com/uv-laser-chillers_c4

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

What kinds of equipment is CW-3000 cooler applicable to cool?

You might know that small water chiller CW-3000 is different from other chiller models. The biggest difference is that CW-3000 cooleris a passive cooling chiller, which means it doesn’t have refrigeration function. Therefore, it is only suitable to cool small power industrial equipment, such as UV printer, small power CNC spindle, small power CO2 laser source and so on.

After 19-year development, we establish rigorous product quality system and provide well-established after-sales service. We offer more than 90 standard water chiller models and 120 water chiller models for customization. With cooling capacity ranging from 0.6KW to 30KW, our water chillers are applicable to cool different laser sources,laser processing machines, CNC machines, medical instruments, laboratory equipment and so on.

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/air-cooled-water-chillers-cw-3000-110v-200v-50hz-60hz_p6.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

Why is small water chiller CW-5000 is so widely used in cooling UV LED curing system?

Small water chiller CW-5000 has wide application in cooling not only small powered laser machines but also UV LED curing systems. So what makes this chiller so popular? Well, CW-5000 water chiller has a compact design, but this small size doesn’t indicate poor cooling performance. Instead, this chiller has a cooling capacity of 800W and the temperature stability of ±0.3℃, which shows the powerful refrigeration ability of this chiller. This makes it become the ideal cooling solution for cooling UV LED curing system.

After 19-year development, we establish rigorous product quality system and provide well-established after-sales service. We offer more than 90 standard water chiller models and 120 water chiller models for customization. With cooling capacity ranging from 0.6KW to 30KW, our water chillers are applicable to cool different laser sources,laser processing machines, CNC machines, medical instruments, laboratory equipment and so on.

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/water-chillers-cw-5000-cooling-capacity-800w_p7.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

Is air cooled water chiller CW-3000 a refrigeration based chiller?

In the product range of S&A Teyu Chiller, you might find there is one chiller model that is a little different from the others. And it indicates 50W/C radiating capacity. And what we are talking about here is air cooled water chiller CW-3000. The chiller CW-3000 is a passive small water chiller which suggests there is no compressor inside. Therefore, it is not a refrigeration based chiller. Even so, small water chiller CW-3000 is still applicable to cool a wide range of industrial equipment of small heat load, such as laser engraving machine, CNC machine spindle and UV LED printer.

After 19-year development, we establish rigorous product quality system and provide well-established after-sales service. We offer more than 90 standard water chiller models and 120 water chiller models for customization. With cooling capacity ranging from 0.6KW to 30KW, our water chillers are applicable to cool different laser sources,laser processing machines, CNC machines, medical instruments, laboratory equipment and so on.

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/air-cooled-water-chillers-cw-3000-110v-200v-50hz-60hz_p6.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 300 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 8 0,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

How to drain down S&A Teyu small water chiller CW-5200?

Draining down S&A Teyu small water chiller CW-5200 is nice and easy.

First, turn off water chiller CW-5200 and the heat generating equipment;

Second, unscrew the drain port of the chiller and tilt the chiller by 45 degree for easy draining;
Third, screw tight the drain port and add purified water or clean distilled water through water filling port;
Fourth, when water reaches the green area of the level check, stop adding water and screw tight the water filling port.

After 19-year development, we establish rigorous product quality system and provide well-established after-sales service. We offer more than 90 standard water chiller models and 120 water chiller models for customization. With cooling capacity ranging from 0.6KW to 30KW, our water chillers are applicable to cool different laser sources,laser processing machines, CNC machines, medical instruments, laboratory equipment and so on.

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/recirculating-compressor-water-chillers-cw-5200_p8.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 280 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 70,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

What is the suggested way to avoid the blockage in the water loop of air cooled chiller CW 5200?

If water quality of air cooled chiller CW-5200 is bad, blockage is very likely to occur in the water loop of the chiller. Blockage will slow down the water flow which can easily lead to E6 water flow alarm. To avoid the blockage, users are suggested to:

1.Use purified water, clean distilled water or DI water as circulating water;
2.Change out the water on a regular basis. For example, every 3 months or every 1 month. It depends on the actual working environment of the small water chiller. Generally speaking, the more inferior the working environment, the more frequently users should change out the water. 

After 19-year development, we establish rigorous product quality system and provide well-established after-sales service. We offer more than 90 standard water chiller models and 120 water chiller models for customization. With cooling capacity ranging from 0.6KW to 30KW, our water chillers are applicable to cool different laser sources,laser processing machines, CNC machines, medical instruments, laboratory equipment and so on.

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/recirculating-compressor-water-chillers-cw-5200_p8.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 280 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 70,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

Is there any difference of the cooling fan functions in small water chillers CW3000 and CW 5000?

You might notice that both small water chillers CW-3000 and CW-5000 have a cooling fan inside. But does the cooling fan serve the same function in these two? Well, that is not true. For small water chiller CW-3000, the cooling fan is equipped to take away the heat from the coil. As for water chiller CW-5000, the cooling fan serves to take away the heat from the condenser.

After 19-year development, we establish rigorous product quality system and provide well-established after-sales service. We offer more than 90 standard water chiller models and 120 water chiller models for customization. With cooling capacity ranging from 0.6KW to 30KW, our water chillers are applicable to cool different laser sources,laser processing machines, CNC machines, medical instruments, laboratory equipment and so on.

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/water-chillers-cw-5000-cooling-capacity-800w_p7.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 280 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 70,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.

Is Small Water Chiller CW-3000 Really Suitable for Your CO2 Laser Engraving Machine?

Recently, a client from Poland purchased a CO2 laser engraving machine and he was hesitating whether S&A small water chiller CW-3000 was suitable or not.

Well, let’s get to know the basic information of this chiller first. Water chiller CW-3000 is more like a radiator with a fan. It consists of water tank, water pump, heat exchanger, cooling fan and other related control parts, but not a compressor. As we know, compressor is the core component of the refrigeration process and a water chiller without it can not be categorized as a refrigeration based water chiller. And that’s why CW-3000 chiller indicates radiating capacity 50W/℃ instead of cooling capacity in the parameter sheets like other refrigeration chiller models do. But wait, what does radiating capacity mean anyway? Some people might ask. 

Well, 50W/℃ radiating capacity means when the water temperature of small water chiller CW-3000 increases by 1℃, there will be 50W of heat taken away from the laser tube of the CO2 laser engraving machine. This chiller is able to maintain the water temperature at room temperature and suitable for cooling CO2 laser tube of below 80W. 

Therefore, if users are satisfied with the fact that the water temperature is maintained at room temperature, then chiller CW-3000 is an ideal choice. If they prefer to typical 17-19 degrees Celsius required for a laser tube, then they are suggested to look at our refrigeration based water chiller CW-5000 and the above models. 

If you are not sure what small water chiller to choose for your CO2 laser engraving machine, just write us an e-mail to marketing@teyu.com.cn and we will reply you with a professional cooling solution.

Buy Water Chillers at Factory Price! Get Live Quotes Now! 

https://www.teyuchiller.com/air-cooled-water-chillers-cw-3000-9l-water-tank-110v-200v-50hz-60hz_p6.html

Guangzhou Teyu Electromechanical Co., Ltd.

SKYPE: teyuchiller

Email: marketing@teyu.com.cn

Website: https://www.teyuchiller.com

Tel: + 86-20-89301885

Fax: + 86-20-84309967

About S&A Brand

S&A(TEYU) was founded in 2002. After 19 years of development, the headquarter covers an area of 18,000 square meters, and has about 280 employees.  

Why choose S&A

Product Advantages:

1. With 11 patent certificates，CE, RoHS and REACH approval; Conforms to air transport requirements; 2 years warranty;

2.±0.1℃ high precision temperature control, stable cooling performance,support 

ModBus-485 communication;

3. Establish logistic warehouses at USA and Europe;

Manufacturing Advantages:

1.Independent R&D on sheet metal, evaporator, condenser and cores parts of chiller;

2. Annual output 70,000 units, product exports rate above 60%；

3. Standard bulk production, standard parts rate up to 80% ；

4. With excellent laboratory testing system, simulates actual working environment for 

chiller.