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Industrial Grade 99.9% Propylene Glycol/1, 2-Propanediol/1, 2-Dihydroxypropane/Pg for Upr Industry, Find Details and Price about Propylene Glycol Pg Industrial Grade from Industrial Grade 99.9% Propylene Glycol/1, 2-Propanediol/1, 2-Dihydroxypropane/Pg for Upr Industry - Shandong Chemic Chemical Co., Ltd.