Adipic Acid, Propylene Glycol, Maleic Anhydride manufacturer / supplier in China, offering Food Grade Propylene Glycol 99.8% Min CAS No 57-55-6, China Factory Direct CAS 1569-02-4 Propylene Glycol Monoethyl Ether with High Purity, Propylene Glycol Monoethyl Ether 1-Ethoxy-2-Propanol CAS 1569-02-4 with High Purity and so on.