Shanghai DAIDO SP co., LTD, the only wholly owned subsidiary of Japan DAODO SP co., LTD in China, was established in September 2001 and honored as "the encouraged enterprise" by Shanghai Economic Commission. The company is located in Songjiang District in Shanghai, which covers an area of 12000 m2 and owns large amount of Japanese PC spring equipment. As a competitive company, Shanghai DAIDO Spring co., LTD obtained the ISO9001:2000 quality management system certificate in 2003 and the ISO/TS16