1) ISO9001, ROHS, CE 2) High quality of chip 4) Bottom material: red copper 5) ... development;avalanche thyristors;(TL371-250,TL371-320)phase control thyristor;(T212-10,T222-20,T232-20,T242-50, ... ;(DF212-10,DF212-16X,and so on)Plate high frequency thyristor;KG(KA)100A-1500A/100V-2000VThyristor module;MTC, ... valve module;MDC,MDA,MDK(25A-800A/800V-2000V)Thyristor electric valve mix module;MFC,MFA,MFK(25A- ...