1. The installation of the metal engraving machine is stable and does not shake.
2. The parts of the metal engraving machine are complete without scratches, the mechanical parts are complete, and the connection is stable.
3. The metal-to-metal welding structure should be seamless welding.
4. The appearance of the metal engraving machine is clean and tidy, without dirt and grease.
5. The transmission system should be stable, and there should be no vibration, noise, etc. The belt should be in good condition and have a spare.
6. The gear shifting should be smooth.
7. The operating system of the metal engraving machine cannot appear dull, and the values of each instrument should be consistent with the mechanical parameters.
8. The guide rail and the working surface cannot have major deformation and wear.
9. The tool installation should be positioned correctly, stable and effective.
10. The vacuum cleaner is installed well.
