Points to note when using a full steel ventilation cabinet:

2. Heads are strictly prohibited from being placed 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 windows up and down slowly and gently to avoid the handle from pinching your hand.

8. The operational area of the steel-enclosed fume hood should be kept clear to prevent items from piling up around the hood.