GB/T 22453-2025 Chinese PDF (GB /T22453-2025) GB/T 22180-2024 2-2025_Chinese: Acoustics - Measurement of

2-2025_Chinese: Acoustics - Measurement of the influence of road surfaces on traffic noise - Part 2: The close-proximity method (Chinese: 声学 道路表面对交通噪声影响的测量 第2部分：近距法)

2-2025_Chinese: National food safety standard - Disinfectant (Chinese: 食品安全国家标准 消毒剂)

English versions: GB/T 20965-2025

3-2025_Chinese: Surface mounting technology - Part 3: Standard method for the specification of components for through hole reflow(THR) soldering (Chinese: 表面安装技术 第3部分：通孔回流焊用元器件规范的标准方法)

GB/T 20042

GB/T 22453-2025 Chinese PDF (GB /T22453-2025) GB/T 22180-2024 2-2025_Chinese: Acoustics - Measurement ofGB T 22453 2025_Chinese: Non linear optical crystal devices measuring method for laser (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 22453 2025