Profile: Will-Best Welding Equipment Co., Ltd. specializes in the production of precision resistance welding equipments. We manufacture various precision welding machines such as spot welder, spot weld head, welding power supply, weld checkers & monitors. Our AP5K-C precision AC double-pulse resistance welding machine is a pneumatic double-independence pressure-adjustable double-pulse AC integral precision spot welding machine with double welding spots. Our HF-50KA high-frequency inversion welding power supply is a double pulse high frequency inversion welding power supply, which is optional for constant voltage and constant current output.