1.roofing material 2. pvc membrane with reinforced polyester inside 3. Thickness:1.20mm, 1.50mm, and 2.0mm 4..Watrproof, aging resistance,uv and flame resistance, enviromental-friendly during construction. 5. Applied in various fields, such as roof construction,subway, bridges, channel tunnel, planted roof, waterproof and drainage system, pools, dam, irrigation system, light steel roof ect 6. It meets the standard GB12952-2003. ASTM D4434 .DIN 16734.