GB/T 30425-2025 Chinese PDF (GB /T30425-2025) GB/T 21536-2024 GB/T 41780

GB/T 41780

5-2024_Chinese: Implants for surgery - Ultra-high-molecular-weight polyethylene - Part 5: Morphology assessment method (Chinese: 外科植入物 超高分子量聚乙烯 第5部分：形态评价方法)

3-2025_Chinese: Railway applications - Compatibility between rolling stock and train detection systems - Part 3: Compatibility with axle counters (Chinese: 轨道交通 机车车辆和列车检测系统的兼容性 第3部分：与计轴器的兼容性)

English versions: GB/T 12690

power supply units and combinations thereof - Part 5: Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers for general applications (Chinese: 变压器、电抗器、电源装置及其组合的安全 第5部分：一般用途隔离变压器和内装隔离变压器的电源装置的特殊要求和试验)

GB/T 30425-2025 Chinese PDF (GB /T30425-2025) GB/T 21536-2024 GB/T 41780GB T 30425 2025_Chinese: Water cooling equipment for converter valves for high voltage direct current(HVDC) ower transmission (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 30425 2025