GB/T 13777-2024 Chinese PDF (GB/T13777-2024) GB/T 42125.5-2024 3-2025_Chinese: Optics and photonics -

3-2025_Chinese: Optics and photonics - Test methods for telescopic systems - Part 3: Telescopic sights (Chinese: 光学和光子学 望远镜系统试验方法 第3部分：瞄准望远镜)

English versions: GB/T 44970-2024

4-2025_Chinese: Design specification for mechanical components in nuclear island of pressurized water reactor nuclear power plants - Part 4: Class 3 components (Chinese: 压水堆核电厂核岛机械设备设计规范 第4部分：3级设备)

1-2025_Chinese: Assembled spectacles - Part 1: Single-vision and multifocal prescription assembled spectacles (Chinese: 配装眼镜 第1部分：单焦和多焦定配眼镜)

GB/T 13777-2024 Chinese PDF (GB/T13777-2024) GB/T 42125.5-2024 3-2025_Chinese: Optics and photonics -GB T 13777 2024_Chinese: Test method for maturity of cotton fibers Microscopic method (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 13777 2024