GB/T 2900.65-2023 Chinese PDF (GB/T2900.65-2023) GB/T 21218-2023 English versions: YY/T 1949-2024

English versions: YY/T 1949-2024

GB/T 45199-2025_Chinese: Assessment of the endangerment degree of poultry genetic resources (Chinese: 家禽遗传资源濒危等级评定)

English versions: GB/T 45655-2025

English versions: GB/T 21295-2024

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 2900.65-2023 Chinese PDF (GB/T2900.65-2023) GB/T 21218-2023 English versions: YY/T 1949-2024GB T 2900. 65 2023_Chinese: Electrotechnical terminology Lighting (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 2900. 65 2023