Adipic Acid, Propylene Glycol, Maleic Anhydride manufacturer / supplier in China, offering China Supplier of Di Propylene Glycol for Polyurethane Foam and Coolant Fluid DPG, Versatile Di Propylene Glycol for Paints, Coatings, Inks and Cleaning Products DPG, High-Quality Di Propylene Glycol 99.5% Min for Plasticizer and Chemical Intermediate DPG and so on.