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English versions: GB/T 13671-2025
English versions: GB/T 25936
English versions: GB/T 1346-2024
English versions: GB/T 27995
control and laboratory use - Part 18: Particular requirements for control equipment (Chinese: 测量、控制和实验室用电气设备的安全要求 第18部分：控制设备的特殊要求)
GB/T 25020.1-2025 Chinese PDF (GB /T25020.1-2025) GB/T 20931.12-2025 English versions: GB/T 13671-2025GB T 25020. 1 2025_Chinese: Pole for overhead contact system of electrified railways Part 1: Steel pole (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 25020. 1 2025
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