Points to note when using a full steel ventilation cabinet:

2. Do not place your head inside the cabinet for operation or observation during the experiment.

4. Absolutely no mobile drill shavings or wires are allowed inside the cabinet.

6. Move the window up and down slowly and gently to avoid pinching your hand with the handle.

8. The operational area of the steel ventilation cabinet should remain unobstructed to prevent items from piling up around it.