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Wannate Hb-75b HDI Biuret Aliphatic Polyisocyanate Curing Agent 75% Solid Non-Aromatic Butyl Acetate Hardener for Automotive & Outdoor PU Coatings, Find Details and Price about Wannate Hb-75b Aliphatic Polyisocyanate Curing Agent from Wannate Hb-75b HDI Biuret Aliphatic Polyisocyanate Curing Agent 75% Solid Non-Aromatic Butyl Acetate Hardener for Automotive & Outdoor PU Coatings - Shandong Rhine River International Trade Co., Ltd.