- 18
- Oct
防火門關閉
Normally closed fire door can effectively block the invasion of smoke and fire after a fire, so it is one of the important measures of fire control. 如果常閉防火門處於開啟狀態，一旦發生火災，就無法阻止火勢蔓延和煙霧蔓延。
Normally closed fire door can effectively block the invasion of smoke and fire after a fire, so it is one of the important measures of fire control. 如果常閉防火門處於開啟狀態，一旦發生火災，就無法阻止火勢蔓延和煙霧蔓延。