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。
We had better buy a fire resistance rolling shutter door.
我们最好买个防火卷帘门。
Guangzhou yajunyun door industry co. , LTD is a professional design, production, sales, installation of fire doors, fire shutter, fire glassdoors, security doors production enterprises.
是一家专业设计、生产、销售、安装防火门、防火卷帘门、防火玻璃门、防盗门的生产企业。
Guangzhou yajunyun door industry co. , LTD is a professional design, production, sales, installation of fire doors, fire shutter, fire glassdoors, security doors production enterprises.
是一家专业设计、生产、销售、安装防火门、防火卷帘门、防火玻璃门、防盗门的生产企业。
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