... the research and development;avalanche thyristors;(TL371-250,TL371-320)phase control thyristor;(T212-10,T222-20,T232-20,T242-50,T151 ... bridge module;MDS10A-500A,MDQ10A-500A(800V-2000V)Solid state relay series;(SSR-3,ssr,jgx-1,jgx-3j)Each kind ...