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GB 21257-2024 Chinese PDF GB/T 45183-2025 71-2024_Chinese: Communication networks and systems

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71-2024_Chinese: Communication networks and systems for power utility automation - Part 7-1: Basic communication structure - Principles and models (Chinese: 电力自动化通信网络和系统 第7-1部分：基本通信结构 原理和模型)

GB 19272-2024_Chinese: Safety for outdoor body-building equipment - General requirements (Chinese: 室外健身器材的安全 通用要求)

English versions: GB 45188-2024

29-2024_Chinese: Methods for chemical analysis of titanium sponge

English versions: GB/T 4498

GB 21257-2024 Chinese PDF GB/T 45183-2025 71-2024_Chinese: Communication networks and systemsGB 21257 2024_Chinese: Norm of energy consumption per unit production of caustic soda, PVC, methane chloride (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 21257 2024

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