The standard specifies the classification, technical requirements, test methods, inspection rules and labels, Encasement, transportation, storage, safety and hygiene of Bicycle primers. The standard applies to bottom painting Coatings made of Resin, pigment, solvent and auxiliary grind. The standard specifies the technical indicators of different primers, including Color, Fineness, Viscosity, Drying Time, percent solids, etc., and introduces relevant test methods and standards. In addition, it puts forward clear requirements for the inspection, Encasement, transportation and storage of products, while emphasizing safety, hygiene and environmental protection precautions.