Municipal venues are an important part of municipal utilities, mainly including gymnasiums, exhibition centers, libraries and other public places with large architectural space and large changes in pedestrian flow, including airports, high-speed rail stations, subway stations and other transportation hubs and related facilities such as urban water supply, drainage, gas, heat, landscaping, environmental sanitation, roadway lighting, industrial waste, medical waste, and domestic waste disposal equipment, etc.

Sculpture exposed to the natural environment for a long time, by wind and rain erosion, material aging and other factors, corrosion will occur. Stainless steel, copper alloy and other metal materials, despite a certain degree of corrosion resistance, but in specific environmental conditions, corrosion may still occur. In addition, the sculpture of the spray paint coating layer may also be due to the metal material itself corrosion resistance of different as well as the differences in the pre-painting treatment process, resulting in different corrosion resistance and anti-corrosion performance.