Yifeng Brand bellows heating material is taken sensitive ceramic of the hihg property PTC (Positiv temperature coefficient) as the heating source, the matal bellows radiator as the heat conduction material. It is integrated with the special bonded technology. It has the following characteristic such as long natural lifetime, automatic constant temperature, without fire flame, high reliability, obvious saving energy, etc. It is widely used in the home warmer, clothes dryer, hand dryer, food dryer, air conditioning auxiliary heater industrial space heater, etc. We can produce all kinds of PTC heating components according to the customer's demand.