... Tensile strength 15.6Mpa 3. PVC water stop 4. EVA water stop 5. waterproof partition board Chengdu RenFeng Industrial Co., Ltd. Since ... one of the project.Customers can select the appropriate water-stop engineering requirements apply - tunnels, culverts, water aqueducts, dams, ... underground facilities. The specifications of PVC water stopper(waterproof partition board: Model 651: 280-7, 290-8, 300-8, ...