This standard specifies the classification and marking, requirements, test methods, inspection rules, and marking, Encasement, transportation and storage of water-soluble polyvinyl alcohol building Adhesives. It is applicable to water-soluble polymer building Adhesives prepared with polyvinyl alcohol as the main raw material. It is used to prepare paving mortar for wall putty and ceramic bricks. The products are divided into formaldehyde-free type and ordinary type. The marking should be carried out according to the order of product name, standard number and classification. In accordance with the provisions of Table 1.