... used in the automobile, construction equipment hydraulic industry and etc.1. Material Available: Copper, Brass, Aluminum, Stainless Steel, ... Processing: turning, milling, drilling,casting,stamping etc.5. Equipment: CNC lathe, automatic lathe, hand lathe, thread rolling machine, tapping ... Treatment: Plating, anodizing, black oxide etc.7. QC 1) Technicians self-check in production 2) Engineer spot check ...