Rudong Zhenfeng Yiyang Chemical Co., Ltd., whose predecessor were Rudong Synthetic Chemical Factory which set up in 1974, is one of the main producers of Phosphorous Acid for Export in China and is located in the eastern coast of the south Yellow Sea and the northern side of the Yangtze River, near Shanghai, Wuxi and Suzhou cities. Main Products are including Phosphorous Acid, Monopotassium phosphite, Tetramethylammonium hydroxide, Amino, tris(methylene phosphonic acid) (ATMP), 1-Hydroxyethylidenedi(phosphonic acid) (HEDP), Alpha,omega-siloxanediols, Phosphate. The products have come up to the national standard and have being sold in American, Germany, Japan, South Korea, Brazil, Australia and etc. by us. There are more 30 technicians (including five senior engineers) in more 100 staff. Meanwhile, we have set up a close cooperative relationship with East China University Science and Technology, Nanjing Chemical University, Nanjing Normal University, Wuhang Chemical College and etc.