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English versions: GB/T 45656-2025
6-2025_Chinese: Methods for chemical analysis of lead concentrates - Part 6: Determination of bismuth content (Chinese: 铅精矿化学分析方法 第6部分：铋含量的测定)
4-2025_Chinese: Quality requirements for enzyme preparations - Part 4: Immobilized glucose isomerase preparations (Chinese: 酶制剂质量要求 第4部分：固定化葡萄糖异构酶制剂)
GB/T 45468-2025_Chinese: Microbeam analysis - FIB-SEM imaging and analysis method for 3D micro-pore structure of rock sample (Chinese: 微束分析 岩石微孔隙聚焦离子束-扫描电镜三维成像分析方法)
English versions: GB/T 17216-2025
GB/T 20878-2024 Chinese PDF (GB/T20878-2024) GB/T 13537-2024 English versions: GB/T 45656-2025GB T 20878 2024_Chinese: Stainless steels Designation and chemical composition (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20878 2024
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