The standard specifies visual and Measuring methods for evaluating the sag, bubble formation, pinholing and hiding power of coating materials under the lame plating process. The evaluation of sag tendency, bubble formation limit and pinholing helps to understand the performance of coatings during application, ensuring that it meets the expected mass standards. The standard also updates measurement techniques, enhancing the evaluation of three-dimensional images of bubbles and pinholing, as well as the reference to relevant specifications. Through the evaluation of these performance indicators, users are able to optimize the application effect of the coating system and improve the quality control level of the product.