美利体育登录入口官网:BS EN 50411-2-5:2009 光纤通信系统用纤维组织和闭合.产品规范.1型S&A类鼓风纤维微管道电缆用密封闭路
Fibre organisers and closures to be used in optical fibre communication systems - Product specifications - Part 2-5:Sealed closures for air blown fibre microduct, type 1, for category S & A