I company production power semiconductor devices have: the series power module ( MTC, MFC ,MDC , MDQ , MDS ),Common success ( ZP ),Fleetness rectifier tube ( ZK ),Soft restore the fleetness rectifier tube (FRD), rotating emission (ZX), high power rectifier element combination, ordinary thyristor (KP), rapid thyristor (KK), two-way thyristor (KS), inverse guide thyristor (KN), can shut off the thyristor (GTO), electric power transistor (GTR) generator excitation rotating rectifier components, various power units. These components are widely used in electrochemical power supply, charging power supply, motor speed, induction heating and heat treatment, etc. Various kinds of rectifier, inverter and the frequency domain. My company's power electronics device successful alternative a variety of the imported components, has realized automatic rolling mill of the original device localization;  6K, 6G,8K , 8G Electric locomotive original device also all by my company localization, the service life is more than the imported components.