Fast shutter door in the use of special equipment should be used and storage, and has a certain electrical and mechanical knowledge.
快速卷帘门在使用过程中，专用设备应有专人使用和保管，并具有一定电工及机械基础知识。
2
It is the mechanical and electrical properties of the fire products, so the installation of fast shutter door should always be in a normal state.
它是机械与电器综合性能的消防产品，因此对安装好的快速卷帘门应始终处于正常状态。
3
Technically, this so-called mechanical reproduction method is dependent on using the camera shutter and sensitivity of a photo development to create a false objectivity.