This product is a light yellow translucent liquid, which is compounded by organic acid, corrosion inhibitor, aluminum ion complexing agent and precious rare earth. It does not contain any toxic substances. This product is easy to use and is chemically polished in the existing two acids. It can be used directly in the liquid, and there is no danger or harmful gas. This product is mainly used for the two acid polishing of high-grade thin-plate sandblasting, drawing and other products. It has excellent uniformity for products with complex structure or large area. The polishing effect can effectively prevent the bad phenomenon of the aluminum alloy material, such as flushing, brightening of the hole edge, uneven uneven corrosion, etc. in the two acid polishing, and can prolong the air transfer dripping time and be applied to the automatic line production.