Detailed Product Description The soft methane generator is made from the ployester fabric with two side coated PVC.Features: 1) high tenacity ployester substrate with two sides coated PVC calendered film.2) well gas tightness, 3) easy to set, repair and move, 4) aging resistance, 5) endure acid and alkali, 6) puncture resistance, 7) high security.Supplied according to customers requirement.