Home / Standards / GB 38451-2019 GB 38451-2019 Active Respiratory protection—Self-contained open-circuit compressed air breathing apparatus for escape 呼吸防护 自给开路式压缩空气逃生呼吸器 Standard Type GB ICS 13.340.30 CCS C73 Status 现行 Issue Date 2019-12-31 Implementation 2020-07-01 Responsible Dept 应急管理部 Drafting Unit N/A