Precision CNC Machining Parts 1. Accept Smaller QTY order 2. Customized design is available 3. OEM service Copper alloy CNC machining ... :Silica sol lost wax casting(precision casting,investment casting),Sand casting Machining:CNC lathe,four-axis milling center ... analysis,tensile strength tester,hardness tester,projector etc Materials Iron, aluminum, steel, copper, plastic, carbon steel, nylon, bronze, ...