Blend Polyol, Flame Retardant, Polyether Polyol manufacturer / supplier in China, offering High-Performance Rigid PU Foam Sdp1222 Low Water Absorption Durable Insulation, Best PU Spray Foam for External Wall Insulation Sdp1222 Made in China, Sdp1222 B2 Spray Rigid PU Foam for Building Walls High Adhesion Low Thermal Conductivity and so on.