Home / Standards / GB 23394 GB 23394 Active Respiratory protection—Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus 呼吸防护 正压式自给闭路压缩氧气呼吸器 Standard Type GB ICS 13.340.30 CCS C 73 Status 现行 Issue Date 2024-12-31 Implementation 2026-01-01 Responsible Dept 应急管理部 Drafting Unit 应急管理部