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GB/T 30137-2024_Chinese: Power quality - Voltage swell
GB 23826-2025_Chinese: Light-emitting diode variable speed limit signs of motorway (Chinese: 高速公路LED可变限速标志)
English versions: GB/T 21536-2024
1-2024_Chinese: Multimode optical fibres for telecommunication - Part 1: Sectional specification for category A1 multimode fibres (Chinese: 通信用多模光纤 第1部分：A1类多模光纤特性)
English versions: GB/T 20424-2025
GB/T 26718-2024 Chinese PDF (GB /T26718-2024) GB/T 24477-2025 GB/T 30137-2024_Chinese: Power quality -GB T 26718 2024_Chinese: Technical requirements for safety system of urban mass transit (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 26718 2024
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