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English versions: GB 8903-2024
English versions: GB/T 45329-2025
GB/T 29479
GB/T 18282
GB/T 45108-2024_Chinese: Recycling materials for platinum group metals (Chinese: 再生铂族金属原料)
GB/T 42513.4-2023 Chinese PDF (GB/T42513.4-2023) GB/T 18487.5-2024 English versions: GB 8903-2024GB T 42513. 4 2023_Chinese: Methods for chemical analysis of nickel alloys Part 4: Determination of silicon content Nitrous oxide flame atomic absorption spectrometry and molybdenum blue spectrophotometry (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 42513. 4 2023
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