SHANDONG YUANLIAN CHEMICAL CO.,LTD. is professional manufacturer of IDS-Na4, PASP-Na, PASP-K, PASP/IDS Chelated Micronutrients for fertilizer, PESA, HPMA, etc. The products are all biodegradable, widely used in Water Treatment Chemical, Wet Electronic Chemical, Cleaner, Detergent, Textile Auxiliaries and Printing & Dyeing Auxiliaries, Pulp and Paper Chemicals, Agriculture and Fertilizer Micronutrients, etc. Main Products: - IDS-Na4 (Tetrasodium Iminodisuccinate / Iminodisuccinic acid tetra sodium salt), biodegradable chelating agent alternative of EDTA / DTPA / NTA. - PASP-Na (Polyaspartic Acid Sodium Salt / Sodium Polyaspartate), eco-friendly anti-scalant and dispersant. - PESA (Polyepoxysuccinic Acid) - PBTCA (2-Phosphonobutane -1,2,4-Tricarboxylic Acid) - HPMA (Hydrolyzed Polymaleic Anhydride ) - PSI (Polysuccinimide) - PASP/IDS chelated micronutrients / trace elements for fertilizer