Home / Standards / GB/T 7920.9-2020 GB/T 7920.9-2020 Active Earth-moving machinery—Graders—Terminology and commercial specifications 土方机械 平地机 术语和商业规格 Standard Type GBT ICS 53.100 CCS P97 Status 现行 Issue Date 2020-06-02 Implementation 2021-01-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A