As to the CNC Die Casting Process, the problem can be reduced by placing a vent on the parting line, but even a very precise process will leave a hole in the center of the casting. Most die castings can be used to perform structures that cannot be completed by casting, such as drilling and polishing. We have professinal team in CNC machining peocess,milling process and casting,turning process etc. Automotive die casting/ brass casting/ cast alloy/ cast aluminum/ precision die cast/ precision metal casting