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GB/T 22322
English versions: GB/T 20130-2025
English versions: GB/T 33296-2025
GB 23394-2024_Chinese: Respiratory protection - Positive pressure self-contained closed-circuit compressed oxygen breathing apparatus (Chinese: 呼吸防护 正压式自给闭路压缩氧气呼吸器)
English versions: GB 10769-2025
GB/T 24851-2024 Chinese PDF (GB /T24851-2024) GB/T 26841-2025 GB/T 22322GB T 24851 2024_Chinese: Specification for equipping and managing of measuring instrument of energy in building material industry (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 24851 2024
