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TPO is the “New Generation” roofing membrane substrate that combined each characteristic of the most popular flexible single-ply membranes: EPDM and PVC
TPO polymers are blends or mixtures of polypropylene plastic/polypropylene and ethylene propylene rubber(EPR)/ethylene propylene diene thermopolymer rubber(EPDM).

The structure and chemical composition of Advance polyolefin provides remarkable compatibility with other polymers, such as: Standards polyolefin resins, including metallocene Olefinic thermoplastic rubbers, EP(D)M, S(E)BS, SIS thermoplastic rubbers.
TPO is the fastest-growing segment of the commercial roofing industry, and WONPOONG is the leading manufacture of this type of roofing material.