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English versions: GB/T 34015
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English versions: GB/T 22474-2025
English versions: GB/T 38205
GB/T 32865-2025 Chinese PDF (GB /T32865-2025) GB/T 21499-2024 English versions: GB/T 34015GB T 32865 2025_Chinese: Quality requirements and test methods for tight sandstone gas products (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 32865 2025
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