Salt spray testing is a crucial method for evaluating the corrosion resistance of materials and coatings. This paper explores the fundamental principles of salt spray tests, focusing on the use of salt spray test equipment like the LISUN YWX/Q-010 Salt Spray Test Chamber. The article will provide a comprehensive overview of how salt spray tests simulate corrosive environments, the applications of such tests, and the specific features and advantages of the LISUN YWX/Q-010 device. Additionally, tables will illustrate sample data collected during salt spray tests. 1. Introduction Corrosion can significantly degrade the lifespan and performance of materials, particularly metals, in outdoor and marine environments. To evaluate the durability of coatings and materials exposed to such conditions, salt spray tests have become an industry standard. The primary goal of these tests is to assess the protective properties of surface finishes and to simulate the conditions that materials would face