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

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)

GB/T 45327-2025_Chinese: Lithium-rich lithium iron oxide (Chinese: 富锂铁酸锂)

English versions: GB 45188-2024

GB/T 12789

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