QC 29008.7-1991 "Automotive product mass inspection body paints painting evaluation method" is an automotive industry standard, which stipulates the inspection and evaluation method of body paints painting mass. The content covers Appearance mass (gloss, Color uniformity, sag, etc.), film performance (adhesion, hardness, impact resistance), corrosion resistance (salt spray test, wet heat aging) and other testing indicators and evaluation rules, and clarifies the sampling method, inspection process and conformity judgment standards. It is suitable for the quality control of automotive body paints painting, providing a technical basis for evaluating coating process stability and product durability, helping to improve automotive Appearance mass and anti-corrosion performance, and standardizing the industry inspection process.