It is make the metal foil into the resistance line, then put it in the two seal slices and form electrical heating component. The excellences as follow: 1 The surface gives off heat, gives off heat equality, high thermal efficiency, the energy conservation province electricity. 2 The life of use is long. Metal film heater using life for traditional heating wire heater element's 10 times. 3 No anger, safe and reliable. 4 Soft the heating body, Strong anti-booklet nature, suits in the environment which soft must bend at the knees. 5 Strong for anti-corrosion nature   We can development and design various film heater according to your demand, there are not restrict by the voltage and temperature.