... highest quality and best price Product DescriptionDY-PVC sheet is a high polymer waterproof material, which is processed by using the Polyvinyl ... Chloride Resin (PVC) as the base material, mixing with plasticizers, UV absorbers and other ... , flat roof, sloping roof.2. Waterproofing of the underground building: Including reservoirs, dams, canals, and all parts of the ...