Blend Polyol, Flame Retardant, Polyether Polyol manufacturer / supplier in China, offering B2 Grade Strong Adhesive Force PU Rigid Foam for Insulation of Building External Wall Blend Polyol п о л и о л, Blend Polyol Capable of Producing Low Water Absorption Rigid Polyurethane Foam, Blend Polyol Capable of Producing Universal Flame-Retardant Rigid Polyurethane Foam and so on.