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English versions: GB/T 12939-2024
GBZ27001-2025_Chinese: Conformity assessment - Common elements - Principles and requirements (Chinese: 合格评定 通用要素 原则与要求)
3-2025_Chinese: Lightning protection system components(LPSC) - Part 3: Requirements for isolating spark gaps(ISGs) (Chinese: 雷电防护系统部件（LPSC） 第3部分： 隔离放电间隙（ISGs）的要求)
English versions: GB/T 22284-2025
English versions: GB/T 30134-2025
GB/T 11880-2024 Chinese PDF (GB/T11880-2024) GB/T 45314-2025 English versions: GB/T 12939-2024GB T 11880 2024_Chinese: Die blocks used for die forging hammers and large mechanical forging presses (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 11880 2024
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