... -10 2. water stop Tensile strength 12Mpa 3.waterproof concrete Chengdu RenFeng Industrial Co., Ltd. Since 2002, is engaged ... recently to build the production of waterproof concrete, which is made of PVC resin, plasticizer, stabilizer raw material, mastication, granulation, ... structures, underground facilities. The specifications of pvc water stop(waterproof concrete): Model 651: 280-7, 290-8, 300-8, ...