1. Replace the traditional manual polishing process. 2. After CNC engraving and milling process, every faucet will be in the same shape with high precision. 3. The metal dust peeled by our CNC machine can be 100% recycled at a higher price. 4. Without environmental pollution, it also ensures the health of workers. 5. One worker can handle several machines at the same time. The efficiency is greatly raised, and the intensity of labor is decreased.