Polyurethane, Polymeric Mdi, Polyether Polyol manufacturer / supplier in China, offering Rigid Foam Polyether: Ideal Insulation Material for Refrigerators with pH 5-8, High-Efficiency Freezer Units Constructed with Rigid Foams Polyether, Rigid Foam Polyether for Superior Refrigerator Insulation with pH 5-8 and so on.