The two major production basis of DYS are Shanghai Yifeng Machinery Co.,Ltd. and Shanghai Shanya Welding And Cutting Machinery Manufacturing Co.,Ltd, which are specialize in dealing with researching, designning, developing and manufacturing for electric welders, arc welders, cutters, grinders ,vibrators, electromotors and other mechanical and electrical equipment! It covers an area of 3,500 square meters, currently with 260 staff, 15 technicians and 2 senior engineers.

    We took the lead to pass CCEE, ISO9002, CCC and CE, was beginning the GS authentication!

Our characteristic: full range of products:
          * guarantee of quality,
          * little time for developing new products