Blend Polyols, PU Catalyst, Polyurethane Waterproof Material manufacturer / supplier in China, offering Fast-Curing Water-Soluble Polyurethane Crack Injection Grout for Concrete Structures, Waterbrone Hydrophilic Polyurethane Grout Grouting Materials for Waterproof Reinforcement Repair of Concrete Leakage, Polyurethane Grout Grouting Materials for Tunnels, Crack Joints and Reinforcement and so on.