The whole set of equipment including,welding line and welding speed chain reflow chain line including chain drive mechanism,assembly line,reflow assembly line,Reflux elevator,reflux tray,tray lifting mechanism,tray blocking mechanism pre-welding positioning mechanism,mechanical hand welding joint loading and unloading hoisting module feeding mechanism, a hoisting mechanism, resistance welding installation Taiwan, positive and negative detection installation Taiwan,pre-welding installation module final mounting table, NG car etc.