Thermoplastic Polyolefin (TPO) is a kind of polymer waterproof membrane. It can be reinforced with polyester felt and fiberglass with non-woven fabric backing, manufactured by advanced extrusion machining technology. 1)Itâ??s easy to install with good system integrity, few accessories. 2) Excellent tensile strength, tearing resistance and penetration resistance performance. 3) No plasticizer, They have been tested as having excellent resistance to thermal aging and ultraviolet, durable and exposed. 4) Hot welding. The peel strength of joint is high. 5) Fast welding speed. 6) Environment friendly, 100% recycled, without chlorine. 7) White-based light -color and smooth surface with high refection, energy saving and anti-dust function.