... condition for long term:1) Size: Different size, according to customer's drawings ,2) Material: carbon steel, alloy steel, stainless steel, aluminum, and ... centers, CNC lathe, CNC machining ,solw wire-cutting, auto lathe, drilling, polish machine etc4) Machining: CNC turning, milling, CNC milling, CNC drilling, and CNC boring5) Precision: Turning and Milling: +/- 0 ...