GB/T 18639-2023 Chinese PDF (GB/T18639-2023) GB/T 45258-2025 GB/T 45257-2025_Chinese: Press and publication

GB/T 45257-2025_Chinese: Press and publication - Knowledge services - Extraction and marking up of knowledge element (Chinese: 新闻出版 知识服务 知识元提取与标引)

13-2025_Chinese: Electronic railway equipment - Train communication network (TCN) - Part 4-1: The test method of train communication network based on Wire Train Bus(WTB) (Chinese: 轨道交通电子设备 列车通信网络（TCN) 第4-1部分：基于绞线式列车总线（WTB）的列车通信网络试验方法)

English versions: GB/T 45029-2024

GB/T 44964-2024_Chinese: Technical specification for performance testing of egg-type chicken (Chinese: 蛋鸡生产性能测定技术规范)

2-2024_Chinese: Cybersecurity technology - Entity authentication - Part 2: Mechanisms using authenticated encryption (Chinese: 网络安全技术 实体鉴别 第2部分：采用鉴别式加密的机制)

GB/T 18639-2023 Chinese PDF (GB/T18639-2023) GB/T 45258-2025 GB/T 45257-2025_Chinese: Press and publicationGB T 18639 2023_Chinese: Diagnostic techniques for rabies (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18639 2023