DS/EN ISO 15528 "paints, varnishes and raw materials for paints and varnish - sampling (ISO 15528:2020) " standard specifies methods and procedures for sampling paints, varnishes and their raw materials. The standard details the sampling requirements for different types of coatings and raw materials, ensuring that the samples collected are representative and accurately reflect the mass characteristics of the entire batch. Including materials in different states such as liquids, powders and viscous substances, the standard provides sampling techniques and precautions for each material. The implementation of this standard helps to improve the accuracy of quality control, ensure the mass conformity of coatings and raw materials in production, testing and market circulation, and provide a scientific basis for production and environment monitoring.