... the ptc thermistor for heating1.air heating,wind warming equipment,cold and warm ari conditioner.2.physicail treatment,massage ... 3.mosquito driving apparatus,boiled water equipment,heating board,shoe drying apparatus,hair curling equipment Third:PTC HEATING CHIPS of ptc ... ,humidifier tec. 2)Tube heating elements for curing irons,wax warmer,glue gun,dehumidifier tec3)other shapes of heating element can ...