Dalian Dongzheng Rubber Co., Ltd (formerly Dalian Second Rubber Factory) is a Japanese and Chinese joint venture, specializing in the production of rubber sealing O-ring and rubber products. Its registered capital is twenty million RMB. The company has 340 employees and has acquired the ISO9001 quality system certification. The company has more than 100 complete sets of imported manufacturing equipment and advanced experimental and testing equipment. Since 1992 the company has produced rubber O-rings of JIS general-purpose series, aviation series, as well as those for automobiles. The company is a large-scale and specialized manufacturer of rubber O-rings in China, exporting more than 500 million rubber O-rings each year. The company recently expanded the capacity of mold manufacturing and has been focusing on developing rubber O-rings of the GB standard series to meet the demand of