Blend Polyols, PU Catalyst, Polyurethane Waterproof Material manufacturer / supplier in China, offering Polyurethane Oily Plugging Waterproof Slurry High Pressure Injection Grout for Construction Joints, Hydrophobic Grouting PU Grout for Tunneling Projects, Single Component Hydrophilic Polyurethane Injection Grout for Waterproof Plugging and Crack Repair and so on.