Home / Standards / GB/T 20408 GB/T 20408 Active Radio-controlled analogue clocks 指针式电波钟 Standard Type GBT ICS 39.040.20 CCS Y11 Status 现行 Issue Date 2016-02-24 Implementation 2016-09-01 Responsible Dept 中国轻工业联合会 Drafting Unit 中国轻工业联合会