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POSMaterial Co., Ltd. Produces Eco-gratings for drainage, Eco-plates for safe walkway, and color coated steel roofs. POSMaterial exclusively use extra anti-corrosion POSCO’s World Premium coated steel sheet called POSMac(ternary alloy of Zn-94.5%, Mg-3%, Al2.5%). The POSMac coated steel roof tiles exhibit the super properties such as flame resistance, heat insulation and noise absorption by applying polymer foamed sub-structure of PP, PE, and TPE foams.