GB/T 19520.22-2023 Chinese PDF (GB/T19520.22-2023) GB/T 45217-2025 English versions: GB/T 23453-2025

English versions: GB/T 23453-2025

GB/T 45599-2025_Chinese: Liquid silicone rubber - Self-lubricating type for connectors (Chinese: 液体硅橡胶 连接器用自润滑型)

5-2024_Chinese: Safety requirements for electrical equipment for measurement

lithi (Chinese: 金化学分析方法 第12 部分： 银、铜、铁、铅、铋、锑、镁、镍、锰、钯、铬、铂、铑、钛、锌、砷、锡、硅、钴、钙、钾、锂、钠、碲、钒、锆、镉、钼、铼、铝含量的测定 电感耦合等离子体原子发射光谱法)

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 19520.22-2023 Chinese PDF (GB/T19520.22-2023) GB/T 45217-2025 English versions: GB/T 23453-2025GB T 19520. 22 2023_Chinese: Mechanical structures for electrical and electronic equipment Dimensions of mechanical structures of the 482. 6 mm (19 in) series Part 3 110: Residential racks and cabinets for smart houses (Chinese: 482. 6 mm(19 in) 3 110) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19520. 22 2023