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What are the casting methods of copper alloys
1. Sand gravity pouring (mainly used for small batches of ordinary products);
2. Pressure casting (mainly used for high-volume precision products);
3. Lost wax casting (mainly used for small batches of crafts);
4. Low-pressure casting (mainly used for small and medium-sized precision products);
5. Gravity casting of metal molds (mainly used for general parts in small and medium batches);
6. Continuous casting (mainly used for large quantities of copper rods and copper plates);
7. Vacuum suction casting (mainly used for precision products in small and medium batches);
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