... certificate, the credit card, if has the product quality question, please relate with the factory, this enterprise ... device production and the research and development;avalanche thyristors;(TL371-250,TL371-320)phase control thyristor;(T212 ... 400*,T143-800,T143-1250,and so on)triaces;(TC212-10,TC222-25,TC232-40,TC242-80 ... DF212-10,DF212-16X,and so on)Plate high frequency thyristor;KG(KA)100A-1500A/100V- ...