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High Speed Cnc Machining Engine Iron Casting Filters Genuine Auto Spare Parts The world's first successfully developed CNC machine tool is a three-coordinate CNC milling machine, which was completed in 1952 by the American Parsons Corporation (Parsons) and the Massachusetts Institute of Technology (MIT). As early as 1948, the United States put forward the initial idea of developing a CNC machine tool when it was developing the task of processing a machine tool for processing