Home / Standards / GB/T 24722-2020 GB/T 24722-2020 Active Glass beads for road markings 路面标线用玻璃珠 Standard Type GBT ICS 03.220.20;93.080.30 CCS P66 Status 现行 Issue Date 2020-12-14 Implementation 2021-07-01 Responsible Dept 国家标准委 Drafting Unit N/A