This standard provides a test method for evaluating the Gloss, Color change, blistering, cracking and adhesion of paints, varnishes or related products at a specific temperature. Testing coatings suitable for household radiators and other equipment aims to simulate the effect of thermal effects in actual use on coating performance. The standard specifies the test procedures and interpretation of results to ensure that the performance of coatings in high temperature environments meets the expected requirements. This method can effectively evaluate the tolerance of coatings under high temperature conditions, providing a basis for the quality control of products.