solution circulation. So the higher upper limit of electric current density is used, deposition rate is speeded up, and the resistance of plating solution is small; vibration plating is not rolling like barrel plating, for this reason it reduces the gall of work pieces by rolling; vibration plating make securrent on parts surface evenly distribute, and improves thickness uniformity of electrodeposits; it will not catchorstick parts sometimes like barrel plating, the qualified ratio of product w