"GB 12952-2011 polyvinyl chloride (PVC) waterproof membrane" standard specifies the technical requirements of polyvinyl chloride (PVC) (PVC) waterproof membrane, including its physical performance, chemical Stability and construction performance. The standard is applicable to the construction of waterproof layer in construction projects to ensure that waterproof membrane has excellent waterproof performance, ageing resistance and weathering resistance to improve the waterproof effect and long-term use performance of buildings.