Blend Polyols, PU Catalyst, Polyurethane Waterproof Material manufacturer / supplier in China, offering PC-41 Active Trimerization Catalyst Used in a Wider Variety of Rigid Polyurethane and Polyisocyanurate Foam and Non-Foam Applications, T12 Catalyst for Case Rigid Foam and Shoe Sole, Solid Content Polymer Polyol Pop 15 for Polyurethane Flexible Foam and so on.