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Product Information
Product Name: USB Dual-Layer Refrigerator (Cooling and Heating)
Product model: KFK4378
Product Material: ABS + Electronic Components
Packing quantity: 16 pieces/case
Packing Method: Color Box
Gross Weight of the Outer Box: 15.2KG
Net weight of the outer box: 14.2KG
Product size: 8.5*12.7*25CM
Packing Size: 18*12*26CM
Crate Size: 48.2*36.6*54 CM
Use Caution:
1. Do not heat carbonated beverages or any similar liquids in this machine.
2. Do not pour liquid directly into the inner tank of this machine.
3. This machine should be placed away from moisture.
4. Do not touch the machine with wet hands.
5. Please unplug the power cord when not in use.
6. Maintain the ventilation openings clean and free of obstructions.
Reduce the opportunity for the machine to be exposed to direct sunlight.
8. When the machine operates in high temperature or humid environments, a little water droplet may appear, which is a normal phenomenon. At this time, you can simply wipe it dry with a dry cloth or towel.
Product Common Questions:
Question: How can I confirm that the refrigerator is functioning normally for cooling and heating?
Answer: Adjust to the corresponding cooling and heating settings, open the refrigerator door after 30 minutes, and touch the temperature of the aluminum plate at the bottom of the refrigerator with your hand. The cooling temperature of the aluminum plate is about 8-10 degrees, and the heating temperature is about 50-55 degrees (by conducting cold and heat through the aluminum plate).
Question: How is the quality of this product?
Answer: This product has been sold for nearly a year, with the highest sales volume and the best popularity across the entire network. If the quality was poor, it would have been eliminated from the market long ago.
Question: Does this refrigerator only cool?
Answer: This model is designed for both heating and cooling. The best use for heating is in the cold winter, and the best use for cooling is in the hot summer.
Question: Are there any usage reminders for this refrigerator?
Answer: 1: The refrigerator door needs to be closed tightly; 2: Use containers with better conductivity; 3: When switching between cooling and heating modes, you need to stay in the reset position for 3-5 seconds; 4: When cooling, the green LED light below is on, and when heating, it is red; 5: The fan below serves to dissipate heat, not to cool by fanning.
Question: Some people have reported that the cooling effect is average. Why is that?
Answer: A product that has been launched and is selling well cannot satisfy everyone. Later, after investigation, it was found that the majority of guests who gave feedback that the cooling effect was average had set their expectations too high. They often compared it with the home refrigerators in their minds. A reminder: The cooling effect needs to be clearly demonstrated only in hot summers.
Question: How low can the cooling reach? How effective is it?
Answer: The refrigeration temperature can reach 8-10 degrees Celsius! The effect can be fully demonstrated only in hot summers, and the drink in your mouth will have a cool feeling.
Question: What is the working principle of this refrigerator? Does it contain CFCs?
Answer: This product's heating and cooling functions are achieved through the principle of semiconductor electrodes, without using CFCs. It can reach a cooling of 8-10 degrees Celsius within 30 minutes, and heating to around 50-55 degrees Celsius. The temperature remains constant for one hour and one day, with no incremental increase. Once the temperature reaches its limit, it will maintain the original temperature.
Question: If you leave a drink in the refrigerator for a long time, will it freeze?
Answer: It cannot freeze because this refrigerator is powered by 5V and has an 800MA current, which cannot compare with household refrigerators.
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Online Customer Service:
WeChat Public Account 
Dear friend, open your WeChat on your mobile phone, click the right upper corner '+', then click 'Scan QR Code'. Scan the QR code of mine, and you can add me on WeChat. New products will be announced on WeChat in the first time, looking forward to working with you!
Contact us
Yiwu Zhongfu Electronics Co., Ltd.
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Shop Address: Shop 7961, 4th Street, 3rd Floor, Zone D, Yiwu International Commerce City Phase I
Contact number: 18258994040 / 18867962055 / 13735611394
Telephone number: 86-0579-85188948 Fax number: 86-0579-85195915
QQ number: 2853267867
Email address: 2853267867@qq.com
Company website:Http://www.ywkfk.com
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