Shanghai Qunsen Industry and Trade Co., Ltd, belongs to China Nanping Degussa Co., Ltd - Wellink Chemical Group, jointed by Germany-China, the largest manufacturer of chemical group for silicon dioxide (white carbon black); activated carbon; barium sulfate etc in China. Degussa - Wellink Chemical Group, joint by Fujian Nanping Wellink Chemical Industrial co., Ltd and Degussa Co., Ltd, the largest manufacturer of chemical group, mainly deal in precipitated silicon dioxide superfine powder, fumed silicon dioxide superfine powder attaching activated carbon, barium sulfate. For years, Qunsen Company mainly provides excellent product service for rubber, tyre, papermaking, silica gel, paints and coating, medicine, feedstuff manufacture. We get the mostly market share in China and export to Southeast Asia, Middle East, Europe, and North America. Our annual output are increased to one hundred thousand metric tons in 2005, and taking the lead in pushing ISO9002 and ISO140000 in craft brother. Our research center specialized to developing new products with advanced technology to meet the certain demand with different clients. The company sticks to: Being honest, credible and creative, activate exploiting market, intensifying its management and providing after service to different custom as perfect as possible. We always think the most suitable is the best.