All right. Fast feedback, longer life and better effect. The machine adopts all-copper transformer, which makes the arc striking smoother, can strike the arc thousands of times instantly, and has a longer service life and better effect. Electric welding machine refers to an electrical appliance that provides a certain power supply for welding. Welding is widely used in various industrial fields because of its flexibility, simplicity, convenience, firmness and reliability, and even the strength after welding is the same as that of the base metal.