When choosing a CNC machine, you can consider the following factors:

1. Processing requirements: First, it is necessary to clarify the type, size, material and processing technology of the workpiece to be processed. Different workpieces require different types of CNC machine tools for processing, such as lathes, milling machines, drilling machines, etc.

2. Processing accuracy: Choose the appropriate CNC machine tool according to the accuracy requirements of the workpiece. Generally speaking, high-precision processing requires more precise CNC machine tools, while for some simple workpieces, ordinary precision machine tools can be selected.

3. Production efficiency: Consider the amount and cycle of production demand and choose a CNC machine tool that can meet the production requirements. Some machine tools have high-speed cutting functions, which can improve processing efficiency.

4. Equipment quality and stability: Choose CNC machine tools with good quality and stability to ensure long-term operation and good processing quality.

5. Technical support and after-sales service: Understand the supplier's technical support and after-sales service capabilities. The use and maintenance of CNC machine tools require professional technical support, and good service can help solve problems and ensure the normal operation of the equipment.

6. Cost considerations: The price of CNC machine tools is relatively high, so you need to choose the right machine tool based on your budget. You also need to consider the maintenance and operating costs of the equipment.

Taking all the above factors into consideration, select the appropriate CNC machine tool according to specific needs to improve production efficiency and processing accuracy.