... 5.various Material We are an ISO certified manufacturer of precision aluminum CNC machining parts, turning, milling, forging and stamping ... work* ISOMachining work is offered by ISO certified manufacturer - visionseal co.,ltdQC:Strict quality control for machining work by SPC, PCP ... C37700Titanium - 6AL-4VSpecial material - INVAR, REMKO B, NORYL, POM, ACETAL precision aluminum CNC machining parts