... Available: Copper, Brass, Aluminum, Stainless Steel, Steel alloy, etc.2. Specification: OEM, according to customers' drawing or sample.3. Precision ... milling, drilling,casting,stamping etc.5. Equipment: CNC lathe, automatic lathe, hand lathe, thread rolling machine, tapping drilling machine etc ... etc.7. QC 1) Technicians self-check in production 2) Engineer spot check in production 3) QC inspects after ...