... 3.CNC Machining 4.Prompt Delivery,Competitive Price 5.OEM TMM manufactures and supply various investment / precision ... Copper Castings with various material grades2. Machining: Turning , Milling, Drilling, Grinding, Threading, CNC Machining, etc.3. Finishing: Sand Blasting ... actual design)5. Strict Inspection before Delivery & Precision Dimension Control, Strict Quality Control & Checking System ...