... customer’s convenience, we provide assembled heating elements: PTC heating element with insulator and wire, PTC heating element with shell, PTC air ... pages. 2. Some samples of uses. Dryer, air heater, air condition heater, mosquito killer, car's heater, humidifier, de-humidifier, heating- ... circuit may be omitted in most appliances.2) It can be used for heating liquid, and it’s no problem when ...