This standard addresses potentially hazardous substances in coatings and their raw materials, specifying an experimental procedure that employs X-ray diffraction instruments for preliminary analysis, combined with methods such as polarizing microscopy or scanning electron microscopy with energy-dispersive X-ray spectroscopy for determination. Its scope of application is not limited to the coatings industry; it is equally applicable to related fields such as shipbuilding, construction, and friction sealing materials. The standard provides detailed technical requirements, ranging from sample preparation, reagents, and instruments (e.g., high-speed centrifuges and box-type high-temperature furnaces) to specific analytical steps. Its aim is to establish a unified and reliable testing basis for controlling the content of hazardous substances in products, ensuring safety in production and use.