Home / Standards / GB/T 17737.209-2026 GB/T 17737.209-2026 Upcoming Coaxial communication cables—Part 1-209: Environmental test methods —Thermal cycling 同轴通信电缆 第1-209部分:环境试验方法 热循环 Standard Type GBT ICS 33.120.10 CCS L26 Status 即将实施 Issue Date 2026-02-27 Implementation 2026-09-01 Responsible Dept 工业和信息化部(电子) Drafting Unit N/A