... ,nice surface Detailed Description Product name Aluminum die casting polishingMachining typeCNC Turning, Milling, Drilling, threading, ... aluminum ingot +back charge → melting → Refining → Spot tests→ Insulation → Die casting →(Inspection)→Trimming → (Inspection) → Clean-up → (Inspection) → surface treatment → ... DHL,UPS,EMS, or according to the customer's demand. Quality control: We have own factory ...