... copper et We are an ISO certified manufacturer of high quality CNC machining parts,turning, milling, forging and stamping ... for metal components & assemblies. In addition to strict quality control system, we also establish a team of ... 4340 etcBrass - C3600 ~ C3604Copper - ASTM C12200, C36000, C37700Titanium - 6AL-4VSpecial material - INVAR, REMKO B, NORYL, POM, ACETAL high quality CNC machining