zhejiang Liujing Rectifier CO;LTD are the professional manufacture of welder diode, rectifier,thyristor SCR,SSR, (Solid State Relay) in China.... We supply our products to our customers in USA. Austria.England,Italy.Korea.Russian. India....... We also supply the equivalent for Westcode ,semikron ,sanrex products.. As a company specialized in maufacturing electric semiconductor and wedding machine's modules,we will supply you the products with high quality ,low price,short delivery time and international standards.