GB/T 31308.3-2023 Chinese PDF (GB/T31308.3-2023) GB 17353-2024 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 21270-2025

oil and electrical components (Chinese: 小艇 舷内柴油机 机装燃油、润滑油和电气部件)

GB/T 19494

English versions: GB/T 45131-2025

GB/T 31308.3-2023 Chinese PDF (GB/T31308.3-2023) GB 17353-2024 3-2025_Chinese: Optics and photonics -GB T 31308. 3 2023_Chinese: Processes, data elements and documents in commerce, industry and administration Long term signature Part 3: Long term signature profiles for PDF Advanced Electronic Signatures(PAdES) (Chinese: 3: PDFPAdES) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 31308. 3 2023