With the development of the industry, people's awareness of the importance of light weight, service life, cost and damage value is getting deeper and deeper, making white aluminum sheet 4×8 trailer siding is more and more adopted and replaced in the process of trailer manufacturing and maintenance steel. White aluminum sheets are often used for trailer wall panels and trailer roof panels, and the common specifications are 4 x 8 aluminum sheet or rolls. The white aluminum plate 4×8 for trailer siding adopts 3004 aluminum and 5000 series aluminum alloy, which has the characteristics of light weight, high strength, good heat insulation, good air tightness, good corrosion resistance, good repairability, beautiful appearance, etc. . feeling unwell. The produced trailer side panels are firmly bonded inside, with high overall strength and very flat surface (flatness error ≤ 0.3mm/m2), which eliminates the quality problems such as blistering and wrinkling that often occur in trailer side panels. Washable, corrosion-resistant, the outer surface of the white aluminum plate is color-coated, which makes the surface of the trailer side plate smooth and clean, and the dirt of the whole plate can be easily removed. The white aluminum pallet has good chemical stability to the atmosphere, water and medium concentration of acid, alkali, salt and other media, and can keep the surface smooth for a long time without discoloration, corrosion resistance, sun protection, anti-aging.