SHANDONG YUANLIAN CHEMICAL CO.,LTD. is professional manufacturer of Iminodisuccinic acid (IDS), Polyaspartic Acid (PASP), Polysuccinimide (PSI) and PASP/IDS Chelats, etc. The products are all biodegradable, widely used in Agriculture and Fertilizer, Chelates and Micronutrients, Water Treatment Chemical, etc. In agriculture, PASP/IDS chelated trace elements and micronutrients are used for fertilizer.Main Products:- GLDA;- MGDA;- IDS (Iminodisuccinic acid / Tetrasodium Iminodisuccinate);- Polyaspartic Acid Sodium Salt;- Potassium Polyaspartate, Polyaspartic Acid Calcium Salt, Polyaspartic Acid Zinc Salt, Polyaspartic Acid Magnesium Salt;- PSI (Polysuccinimide);- PASP/IDS chelated micronutrients for fertilizer;