Blend Polyol, Flame Retardant, Polyether Polyol manufacturer / supplier in China, offering Polyurethane Foam Raw Material Polymeric Mdi Pm200/Pm400 for Heat-Insulation Matarials, Polymeric Mdi Pm400 High Viscosity with Blend Polyol for Wall Insulation, Rigid PU Foam Heat-Insulating Raw Material Ploymeric Mdi 44V20L and so on.