... polyol , Making PU foam applied in spray system, sandwich panel, refrigerator,freezer, etc systems. Good quality Polyether polyol for rigid PU foamRaw material ... product is mainly used for producing rigid PU foam plastics, and widely used in refrigerator, refrigerated car, freezer, heat-insulating board, coating, ... to our R&Ds recommend formulation. Polyether polyol for rigid PU foam plastics