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Tianjin Chengyi International Trading Co., Ltd, established in 1999, is a chemical and pharmaceutical company, headquartered at the National Hi-Tech Industrial Development Area of Taiyuan City, Shanxi Province, China. The company developed from the Foreign Trade Corp. of Shanxi Yuanping Chemicals and Yangquan Jingcheng Chemicals and now become the sole marketer of the Oxalic Acid & derivatives and other products produced by these factories around the world. The goal of the company is to export more Chinese quality chemical products to the world.