The primary classification of scrap aluminum and the graded storage of second-hand equipment recycling in Huangpu District is strictly confidential. The import volume of aluminum scrap accounts for more than one-tenth of the total imports, impacting the machine operation. The highly computerized method of raw material processing is to store all incoming materials in designated areas for high-security destruction. Inventory is documented based on quantity, chemical composition, recovery rate, and cost, and files cannot be recovered. With this information, the smelting process can calculate the economic material formula while ensuring safety and product quality, and the method of incineration.

Dealing with waste aluminum products is time-consuming and labor-intensive, requiring file disassembly and destruction services to remove steel and other non-ferrous metal components connected to the aluminum. The paper documents are then cleaned, crushed, magnetically separated, and dried to create waste aluminum material, which is cut into shredded paper strips. For thin, loose, and friable waste aluminum pieces, such as lock arms on cars, speed gear shaft sleeves, and aluminum shavings, ensure document security by using hydraulic metal baling machines to package and destroy them safely. For steel-core aluminum conductors, the steel core should be separated first, and then the aluminum wire should be wound into coils for environmental protection purposes.