Adipic Acid, Propylene Glycol, Maleic Anhydride manufacturer / supplier in China, offering China Supplier Fragrance and Industrial Grade 99.5% DPG Dipropylene Glycol CAS No., Methylene Chloride CAS No.: 75-09-2 Purity 99.9% for Chemical Intermediate, Wanhua Covestro Rigid PU Foam Chemical Polymeric Mdi Isocyanate 44V20L/M20s/Pm200 and so on.