Solder mask

Solder mark process the surface of pcb between two pcb.No matter rigid pcb or flex circuit are used in this machine,we should keep the environment clean for high product.

Resistance welding is the workpiece to be welded pressed between the two electrodes, and applied current, the use of  current flowing through the workpiece contact surface and the adjacent area of the resistance of the thermal effects of heating it to a molten or plastic state, so that the formation of a metal-bonded Kind of method.