... ,,2.0mm PHYSICAL PROPERTY 1. good combination of high eladticity and tensile strength 2. fire -resistance to static electricity 3. ... planting roofs 7 fine puncture resistance ,joint peel strenghth and joint shear streagth 8,fine UV-resistance ,no pollution ... usd in the roofs of civil buildings ,tunnels ,channels ,subways ,highways ,planting roofs ,the roofs of steel frame structure buildings and etc