Profile: Mardek LLC specializes in providing plastic and metal manufacturing services. We are an ISO 9001 certified company. Computer numerical control (CNC) machining is an umbrella term for the subtractive manufacturing processes that use computer software to direct the operation of tooling and equipment. CNC can be integrated into several types of machining equipment, ranging from lathes and mills to grinders and routers, to simplify and streamline the manufacturing process. The precision and efficiency afforded by CNC machining often eliminate the need for manual machining or additional processing operations.