... steel,aluminium,copper and etc. We are an ISO certified manufacturer of metal CNC machining products parts, turning, milling, forging and stamping parts ... per request for machining work* ISOMachining work is offered by ISO certified manufacturer - visionseal co.,ltdQC:Strict quality control for machining work ... material - INVAR, REMKO B, NORYL, POM, ACETAL metal CNC machining products