... once, it will circulate with dXX, q_X, h_X three types. The meaning indicates: spot welding, braze welding, backfire welding, press this button ... as follows).d) Stand-by state, digital indicate dXX means spot welding mode, no status block between electrodes, press (START) ... at present.Announcements: 1. Must use the list mutually three-line power supplies, guarantee that the machines cover connect to ...