General welding wire and the metal contact element pins and contact, contact and contact plate (metal welding, soldering strong many times). Automotive wiring harness welding machine is through the current, more shares or single strand wire welding into a line. Its advantage is: after welding good electrical conductivity, low resistivity or nearly zero; Welding time is short, don't need any, gas, and solder flux.

Generally use precision high-frequency inverter resistance welding machine, mia base with more is Japan brand, our products can use instead