DW-200S spot-welder (inverter type)▲ CCD vision module: automatic recognition & position▲ servo motor + ball screw system: excellent working precision▲ 200×200×20mm working range: applicable to various work pieces▲ inverter power supply: high welding accuracy & speed DW-200S inverter advantages:▲ inverter DC welder; with steady DC power output regulated by invert..