1) Practicality: It refers to clarifying which one or several problems in production are solved by CNC machine tools.

2) Economy: It means that the price paid by the selected CNC machine tool is the most economical or more reasonable under the condition that it meets the processing requirements.

3) Operability: The CNC machine tool selected by the user should be adapted to the operation and maintenance level of the enterprise.

4) Stable reliability: refers to the quality of the machine tool itself. Choosing famous brand products can ensure the stability and reliability of CNC machine tools.
