GB/T 5121.8-2024 Chinese PDF (GB/T5121.8-2024)GB T 5121. 8 2024_Chinese: Methods for chemical analysis of copper and copper alloys Part 8: Determination of oxygen, nitrogen and hydrogen contents (Chinese: 8) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 5121. 8 2024
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