GB/T 44890-2024 Chinese PDF (GB /T44890-2024) GB/T 34750-2025 temperature and pressure tests (Chinese:

temperature and pressure tests (Chinese: 航空器 机载设备环境和操作条件 湿度、温度和大气压力试验)

English versions: GB/T 30134-2025

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)

600-2025_Chinese: Geometrical product specifications (GPS) - Surface texture: Areal - Part 600: Metrological characteristics for areal topography measuring methods (Chinese: 产品几何技术规范（GPS） 表面结构：区域法 第600部分：区域形貌测量方法的计量特性)

GB/T 44890-2024 Chinese PDF (GB /T44890-2024) GB/T 34750-2025 temperature and pressure tests (Chinese:GB T 44890 2024_Chinese: Specification for administrative license (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 44890 2024