That the PTC core series(with insulated paper) is one kind of surface insulation new model PTC fever heat body. Metal electrode having assembled a pair of belt fuse in two flanks side of average PTC component, yellow paper of insulation , structure are still simple in the metal electro de outward appearance on envelop; Unnecessarily plus ch-arging the temperature device for being Okconstant temperature fever heat and the insulation intensity are high , reliable , sustainable safe the power sta- bility generating heat , usage voltage range are broad , life time is long, another external form the dim- ension is nimble various, may need according to customer reality book make various type specification.      The wave hair generating heat embodying applying to broadly grips outside parcel insulating paper type PTC , hair dividers , electricity cleat , ion heat up , ceramics heats up , the steam an impl- ement , beautiful skin wax cures a series of cosmetology hair-dressing equipment and material series such as instrument etc.May need to use product above such as minor home appliance , electronic eq- uipment needing heating heat preservation in a few according to customer reality besides also.