1.The key parts uses the products made in famous companies, the capacity of the whole machine can be assured. 2. Digital display voltage. 3. Equipped with various of welding tools. 4. Large-scale cable and the spot welding head welds. 5. Hommization designed machine structure, movable power source make it possible to change the operation station freely. 6. The screw welding function which makes it easy to use for car repair. 7. This type of machine can make various of welding function.