Methylene Chloride, Propylene Glycol, Acetic Acid manufacturer / supplier in China, offering Manufacture Raw Material Propylene Glycol CAS No. 57-55-6 for Electrical Smoker Oil, 99.5% 99.9% Factory Supply USP/Industry Grade Propylene Glycol / Pg CAS No.: 57-55-6, CAS 57-55-6 Purity 99.5% Purity Liquid Propylene Glycol for Cosmetic Filed Use and so on.