The equipment has stable performance, reliable welding quality, compact and reasonable structure, small size and large power. The customer evaluates it as “fighter” in welding machine. Precision microcomputer technology control, can store a number of procedures, can be changed at will, call; the double-stage multi-pulse adjustment can improve the output energy waveform, improve the welding ability and make the welding spot firm and beautiful. Automatic monitoring and tracking compensation of grid voltage; simple design, easy to learn equipment operation; digital LED display, equipment parameter adjustment more intuitive easy to learn easy to operate; the design of the rear outlet electrode makes it easier to assemble on the automatic equipment. Optimized structure design, exquisite appearance, compact and reasonable structure, small size and large power; industrial grade circuit design, circuit safety and reliability.