Home / Standards / GB/T 42254-2022 GB/T 42254-2022 Active Sea ice grade of Bohai Sea and Northern Yellow Sea 渤海和黄海北部冰情等级 Standard Type GBT ICS 07.060 CCS A45 Status 现行 Issue Date 2022-12-30 Implementation 2023-04-01 Responsible Dept 自然资源部(海洋) Drafting Unit N/A