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2-2023_Chinese: Belt drives - Geometrical inspection of grooves for classical and narrow V-Pulleys - Part 2: System based on effective width (Chinese: 带传动 普通和窄V带轮槽形检验 第2部分：有效宽度制)
English versions: GB/T 7247
English versions: GB/T 45583-2025
English versions: GB/T 31902-2025
GB/T 23532-2024_Chinese: Quality requirements for D-xylose (Chinese: D-木糖质量要求)
GB/T 42765-2023 Chinese PDF (GB/T42765-2023) GB/T 7247.4-2025 2-2023_Chinese: Belt drives - GeometricalGB T 42765 2023_Chinese: Management system for security operation Requirements with guidance for use (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 42765 2023
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