What is your minimum order quantity?
At least 1000pcs for each item.
What is the delivery period?
About 20-25days, it is up to your order quantity.
What is your payment term?
T/T(30% before production and 70% before shipment),L/C,D/A, D/P, T/T, Western Union, MoneyGram, OA
Can you send free samples?
We can send free samples.
What is your shipping ways?
For sample we usually send by DHL, FEDEX, UPS, THT, EMS(taking 5-7business days). For mass product we are shipping by sea or by air.
The advantages of electric wire heater are lower cost, higher air temperature and smaller volume. Existing problems: First, after a period of use, the insulation withstand voltage, leakage current, and insulation resistance exceed the standard; second, it cannot be powered without wind. If the fan stops, the air duct is blocked, and the temperature protection device fails, the heater It will be burned due to no wind and over temperature, and even the surrounding materials will be burned. Third, after the electric wire has been working for a long time, it may be oxidized and burned, which will affect the life and even cause leakage. Fourth, when flammable substances are attached, they are heating. When it is on the device, it may cause burning.
PTC air heaters can overcome the shortcomings of electric wire heaters. The insulation voltage resistance, leakage current, and insulation resistance are excellent and stable. They can be energized without wind, automatically protected, will not catch fire and burn, and have a long service life. However, if the quality of the PTC heater is not good, there may also be problems: First, the PTC ceramic body is burnt down, causing a short circuit and the insulation layer is burned; second, the heating power is attenuated with the use of time, and it cannot reach the expected service life. . Some PTC heater manufacturers use low-grade materials in order to reduce production costs. The manufacturing process cannot be strictly controlled, and there is no life test. Not all PTC heaters in PTC manufacturers can guarantee the quality. The PTC of each factory has various performance control in power attenuation, power accuracy, inrush current, voltage resistance, insulation performance, and reliability of use. Care should be taken. Select PTC production plant to ensure reliable quality.
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