Diamine phosphate. The first Sino-US joint venture in the country, South Sanhuan Sinochem Cargill Fertilizer Co., Ltd. has been successfully put into operation and has produced qualified products, including diammonium phosphate. The company is composed of Yunnan Sanhuan Chemical Co., Ltd. and China National Chemical Industry Import and Export Corporation. A joint venture established in May 2001 by International Fertilizer Trading Company, Yantai Agricultural Production Materials Corporation and Cargill Fertilizer Co., Ltd. of the United States.