电源母线为二根平行绝缘铜线，在内绝缘层上缠绕电热丝，并将电热丝每隔一定距离与母线连接，形成连续并联电阻。母线通电后，各并联电阻发热，因而形成一条连续的加热带。

　　The power generatrix wire is 2 parallel insulative copper wires.Heating threads are wound around the inner jacket insulation layer.Every certain distance the heating thread is welded to the generatrix,which makes the continuous parallel connection resistance.When the generatrix is powered,the parallel connection resistance begin to heat.This makes a continuousheating belt.

　　The series of our product's comply witn tne rule of National Stanard,Ana Manufaceure license ana Explosion Proof Certificate have also been obtainea,