GB/T 45638-2025 Chinese PDF (GB /T45638-2025) GB/T 45026-2024 31-2025_Chinese: Plugs and socket-outlets for

31-2025_Chinese: Plugs and socket-outlets for household and similar purposes - Part 31: Particular requirements for socket-outlets incorporating USB power supply (Chinese: 家用和类似用途插头插座 第31部分：装有USB电源的插座的特殊要求)

English versions: GB/T 45447-2025

GB/T 45114-2024_Chinese: Nanotechnologies - Measurements of particle size and shape distributions by transmission electron microscopy (Chinese: 纳米技术 透射电子显微术测量纳米颗粒粒度及形状分布)

English versions: GB/T 1406

GB 20943-2025_Chinese: Minimum allowable values of energy efficiency and energy efficiency grades for AC-DC and AC-AC power supplies (Chinese: 交流-直流和交流-交流电源能效限定值及能效等级)

GB/T 45638-2025 Chinese PDF (GB /T45638-2025) GB/T 45026-2024 31-2025_Chinese: Plugs and socket-outlets forGB T 45638 2025_Chinese: Product package labels for electronic components using bar code and two dimensional symbologies (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45638 2025