Linchen group, developed from Sichuan mianzhu hanwang yellow phosphorus co. Ltd. Is a leading private-owned group in deyang city. With a total asset of rmb170 million, a total area of 227,512 square meters coverage and more than 1,000 workers, it mainly produces and distributes d-biotin(vitamin h), phosphate products, cyanide series, textile products and paper sheets and 85% of its products are exported to foreign countries such as Japan, America, Malaysia, south korea, Thailand, France, Australia, south Africa, saudi arabia, united arab emirates, etc. We are one of the biggest manufacturer of yellow phosphorus in the west of China at present. We produce yellow phosphorus 30,000 MT every year. With its remarkable reputation and reliability in China, the group which has one scientific research center(for vitamin h),4 affiliate factories,2 affiliate companies and 2 subsidiary companies, has been awarded the privilege of mainly supported manufacturer and imp. Exp. Enterprise by Sichuan provincial government and the attestation of iso9001:2000. In 2002 it earns 8.1 million dollars of foreign exchange, making it one of the 50 leading export companies in Sichuan province.