Profile: Shijiazhuang Development Zone Desai Chemical Co., Ltd. specializes in offering polyaspartic acid and polysuccinimide. We are an ISO 9001 certified company. Sodium of polyaspartic acid is a kind of artificial biomimetic synthesis water-soluble polymer material. It has the characteristics of phosphate-free, non-toxic, non-pollution and completely biodegradable compound. It is widely used in fields of industrial water treatment, plant nutrient absorption and promotion and metal machining liquid.