GB/T 45211.7-2025 Chinese PDF (GB /T45211.7-2025) GB/T 40711.5-2025 21-2025_Chinese: Test method for noise

21-2025_Chinese: Test method for noise of household and similar electrical appliances - Part 21: Particular requirements for oral hygiene appliances (Chinese: 家用和类似用途电器噪声测试方法 第21部分：口腔卫生器具的特殊要求)

English versions: GB/T 29479

3-2024_Chinese: Optics and photonics - Microlens arrays - Part 3: Test methods for optical properties (Chinese: 光学和光子学 微透镜阵列 第3部分：光学特性测试方法)

3-2025_Chinese: Types and dimensions of lamp caps - Part 3: Prefocus caps (Chinese: 灯头的型式和尺寸 第3部分：预聚焦式灯头)

GB/T 45211.7-2025 Chinese PDF (GB /T45211.7-2025) GB/T 40711.5-2025 21-2025_Chinese: Test method for noiseGB T 45211. 7 2025_Chinese: Technical code of practice for evaluation of resistance to diseases and insect pests in wheat Part 7: Aphid (Chinese: 7) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45211. 7 2025