GB/T 13871.4-2023 Chinese PDF (GB/T13871.4-2023) GB/T 1480-2025 English versions: GB/T 45421-2025

English versions: GB/T 45421-2025

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)

shouldered (Chinese: 成型模 直导柱、带肩导柱和带肩定位导柱)

GB/T 45181-2024_Chinese: Security-related misbehavior detection mechanism for connected vehicles (Chinese: 车联网网络安全异常行为检测机制)

English versions: GB/T 45121-2024

GB/T 13871.4-2023 Chinese PDF (GB/T13871.4-2023) GB/T 1480-2025 English versions: GB/T 45421-2025GB T 13871. 4 2023_Chinese: Rotary shaft lip type seals incorporating elastomeric sealing elements Part 4: Performance test procedures (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 13871. 4 2023