... is short, without any flux, gas, solder l Welding parts without pre-treatment before welding(Amount ... the insulation will not affect the welding effect)l no welding sparks, environmental protection and safetyl ... Special steel horn,long life(1 million times)l For different or similar kinds metal(such as ... power consumption (about a resistance welding 1 / 5)l High reliability. It is on time, energy, limit ...