... .3.Excellent resistance to ageing / weathering.4.Durable,the effective age can be more than 20 years used on exposed ... environment.9.Easily welding,installing,secure.10.Easy treatments to the delicate parts of corners and edges. 11.Convenient maintenance ... LX series Polyvinyl Chloride (PVC) membrane is widely used in the roofs of civil buildings, tunnels, channels, subways, highways, planting ...