Raws li ib txwm muaj, muaj hwj chim transformers and civil hwj chim transformers have four different, one is different nature of electricity, but the price is different, as well as power damage repair, different difficulty and different voltage, Because the muaj power transformer is suitable for industrial production, therefore, and civil power transformer and has a fundamental difference, so, in the choice of transformer, the need to distinguish between industrial power transformers or civil power transformers