This standard specifies the vinyl chloride - calcium carbonate in situ polymerization definition of suspension PVC resin, product classification, requirements, test methods, inspection rules and signs, packaging, transport and storage. This standard applies to the suspension polymerization process by adding calcium carbonate in situ microemulsion polymerization of polyvinyl chloride resin, mainly used currently only chemical building materials NMSG5, NMSG6 resin indicators provides.
