They can substitute ax sery dc welder 是代替ax系列直流电焊机的最佳产品。
2.
Dc welders pose no danger of shock ( labor safety regulations require that ac welders be fitted with anti - shock systems to guard against fatal shock to operators ) 直流电焊机不会电击人体劳检所规定交流电焊机需装电击防止器装置以防止人员发生感电死亡。
