Shijiazhuang Development Zone Desai Chemical Co., Ltd. mainly focus on the R&D, application and production of Polyaspartic acid salts, Tetrasodium Iminodisucccinate and these series of green chemicals, which is a new generation of green water treatment agent, is an excellent auxiliary in oil field production, a new water softening ingredient in the popular household detergent formulations. Also, it can facilitate the roots’ growth and crops‘ adsorption for N, P, K ratios, which increase the utilization ratio of fertilizers and the crop yield. And during the past 13 years, 70% of the Chinese chemical fertilizers production companies had adopted these kinds of products in their production. I&＃39;d like to attach the detailed information to you for further check. Besides, we also have other kinds products, such as L-Aspartic Acid, Fumaric Acid, Maleic Anhydride Acrylic Acid Copolymer, Polyaspartic Acid Salts, Polyepoxysuccinic acid (PESA), Polysuccinimide, Homopolymer of Maleic Acid (HPMA), etc. Please kindly see details from our website: www.desaichem.com.c