Blend Polyol, Flame Retardant, Polyether Polyol manufacturer / supplier in China, offering Thermal Insulation Panel Discontinuous Sandwich Panel Rigid PU Foam, Lba for The Production of Discontinuous Panel Rigid PU Foam Through PU Injection Foam Machine Blend Polyol п о л и о л, 141b for Discontinuous Sandwich Panel Cold Storage Core Layer, Metal Material or Other Materials as The Surface of The Panels Blend Polyol and so on.