Does lead-free copper need lead separation process?

No need. The front nozzle only chooses "lead-free copper" or "lead isolation technology and lining", so only one of lead-free copper and lead isolation technology needs to be selected. Lead-free brass is widely used in medical equipment parts, IT communication parts, cable TV parts, electronic and electrical connectors, connectors, screws, water purification equipment parts, valves, hardware devices, clothing, zippers and other industries.