... 3.Bit tolerance,best price 4.mould can lead 5.modern CNC processing 1.Features:1. Raw materials: from pure aluminum ... & sharp edges,ball blasting, sand blasting.;3.Machining: cutting,CNC machining, milling, drilling, griding,punching,screwing etc.;4.Finishing: ... Surface treatment (Tumbling, Polishing, Tapping, Sandblasting and so on) 5. OEM & ODM services 6.Assembly work Better products ,Better service ...