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English versions: GB 15093-2025
GB/T 24055
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/T 19405
GB 21342-2025_Chinese: Norm of energy consumption per unit production of coke (Chinese: 焦炭单位产品能源消耗限额)
GB/T 13511.4-2025 Chinese PDF (GB /T13511.4-2025) GB 5009.31-2025 English versions: GB 15093-2025GB T 13511. 4 2025_Chinese: Assembled spectacles Part 4: Multifocal and power variation near vision spectacles (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 13511. 4 2025
