The transformer brings less loss of material, high efficiency, and save of energy FWM -DNW-20 Spot Welding Machine This welding machine is specialized equipment for welding of light type welded mesh panel for walls. FWM -DNW-20 Spot Welding Machine Features: 1, The transformer brings less loss of material, high efficiency, and save of energy. 2, Welding pliers can be adjusted freely. 3, The ...