Home / Standards / GB/T 20186.2-2021 GB/T 20186.2-2021 Active Secondary coating materials used for optical fibre—Part 2: Modified propylene resin 光纤用二次被覆材料 第2部分:改性聚丙烯 Standard Type GBT ICS 33.180.10 CCS M33 Status 现行 Issue Date 2021-10-11 Implementation 2022-02-01 Responsible Dept 工业和信息化部(通信) Drafting Unit N/A