CNC is the abbreviation of Computer Numberical Control in English, which means "computer data control", which is simply "numerical control processing". In the Pearl River Delta region, people call it "computer gong".

CNC Machining and numerical control machining are advanced machining technologies in today‘s machinery manufacturing. It is an automated machining method with high efficiency, high precision and high flexibility. It is to input the numerical control program of the workpiece to the machine tool, and the machine tool automatically processes the workpiece that meets people‘s wishes under the control of these data to create wonderful products, so that the artist‘s imagination can be turned into a real commodity. Numerical control machining technology can effectively solve complex, precise and small batch changeable machining problems like molds, and fully adapt to the needs of modern production. Vigorously developing numerical control machining technology has become an important way for our country to accelerate economic development and improve independent innovation capabilities. At present, the use of numerical control machine tools in our country is more and more common, and it is an important way to give full play to its functions to master the programming of numerical control machine tools.