prEN1366-9:2008 Fire resistance tests for service installations-Part 6: Single compartment smoke extraction ducts
prEN1366-9:2008 服务设施的耐火试验,第9部分: 单独隔间排烟管。
中国防火网全国免费咨询电话:400-666-7290
网址:www.firete.com
...
prEN1366-9:2008 Fire resistance tests for service installations-Part 6: Single compartment smoke extraction ducts
prEN1366-9:2008 服务设施的耐火试验,第9部分: 单独隔间排烟管。
中国防火网全国免费咨询电话:400-666-7290
网址:www.firete.com
...