1. China Stud Supplier introduces that the surface of stainless steel screws adheres to organic juices (such as melons, vegetables, noodle soup, sputum, etc.), organic acids will be formed under the action of water and oxygen, and organic acids will corrode metal surfaces.
　　
　　 2. In humid air, the adhesion of dust or dissimilar metal particles and the condensate of stainless steel screws form micro-batteries, which will cause electrochemical reactions and damage the protective film, which is called electrochemical corrosion.
　　
　　3. In polluted air (such as the atmosphere containing a lot of sulfide, carbon oxide and nitrogen oxide), when it encounters condensed water, it will form sulfuric acid, nitric acid and acetic acid liquid spots, causing chemical corrosion.
　　
　　4. The stainless steel surface of Industrial Bolt Factory contains acid, alkali and salt substances (for example, alkaline water and lime water splashed on the decorative wall), which can cause local corrosion.