1. Customer requirements: clean die-cast aluminum auto parts and conduct anti-oxidation treatment. 2. Processing process: Solution: First use aluminate degreaser _ degreaser cleaner OY-122C and ultrasonic to clean die-cast aluminum auto parts. After the cleaning process is completed, rinse with water, and then use die-cast aluminum alloy antioxidant _ mildew-proof aluminum OY-67B to perform anti-oxidation treatment on the copper parts. After the antioxidant treatment is completed, it is washed with water and finally dried. 3. Comparison of die-cast aluminum auto parts before and after cleaning and passivation: the effect of die-cast aluminum auto parts before cleaning and anti-oxidation treatment: example of the cleaning and anti-oxidation treatment of die-cast aluminum auto parts. Die-cast aluminum auto parts after cleaning and Anti-oxidation treatment effect diagram: Example of cleaning and anti-oxidation treatment of die-cast aluminum auto parts 4. Product information involved in the whole process: aluminate degreasing agent_degreasing cleaning agent OY-122C: aluminate degreasing agent_degreasing cleaning OY-122C is an environmentally friendly cleaning agent for aluminum alloys, which does not contain phosphorus, nitrogen and other compounds, and has good biodegradability. It can be used to clean products after electroplating, spraying and mechanical processing without corrosion, pitting and discoloration of the substrate. Antioxidant for die-casting aluminum alloy_Aluminum mold inhibitor OY-67B: Antioxidant for die-cast aluminum alloy_Aluminum mold inhibitor OY-67B is a surface corrosion inhibitor for high-silicon aluminum alloys and aluminum alloys. Use at room temperature. A passivation film is formed on the aluminum alloy surface and the sand surface to isolate the air and block the erosion rate of the humid air, thereby ensuring the smoothness and durability of the aluminum surface.