GB 45067-2024 Chinese PDF GB/T 45442-2025 GB/T 45308-2025_Chinese: Railway applications -

GB/T 45308-2025_Chinese: Railway applications - Rolling stock - Technical requirements for network time synchronization (Chinese: 轨道交通 机车车辆 网络时间同步技术要求)

English versions: GB/T 13631-2023

English versions: GB 14866-2023

GB/T 25187-2024_Chinese: Surface chemical analysis - Auger electron spectroscopy - Description of selected instrumental performance parameters (Chinese: 表面化学分析 俄歇电子能谱 选择仪器性能参数的表述)

attachments and associated chain sprockets (Chinese: 传动用短节距精密滚子链、套筒链、附件和链轮)

GB 45067-2024 Chinese PDF GB/T 45442-2025 GB/T 45308-2025_Chinese: Railway applications -GB 45067 2024_Chinese: Criteria for major accident potential of special equipment judgment (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 45067 2024