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GB/T 31392-2022 Chinese PDF (GB/T31392-2022) GB/T 45131-2025 English versions: GB 5842-2023
GB/T 31392-2022 Chinese PDF (GB/T31392-2022) GB/T 45131-2025 English versions: GB 5842-2023
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Description
English versions: GB 5842-2023
English versions: GB/T 44979-2024
GB/T 22919
English versions: GB/T 31961-2024
GB/T 45434
GB/T 31392-2022 Chinese PDF (GB/T31392-2022) GB/T 45131-2025 English versions: GB 5842-2023GB T 31392 2022_Chinese: Technical guidance for the utilization of coal mine water (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 31392 2022
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