GB/T 13777-2024 Chinese PDF (GB/T13777-2024) GB/T 42125.5-2024 English versions: GB/T 45539-2025

English versions: GB/T 45539-2025

GB/T 45442-2025_Chinese: Statistical indicators system of cold chain logistics (Chinese: 冷链物流统计指标体系)

302-2024_Chinese: Electricity metering equipment(AC) - Particular requirements - Part 2: Static harmonic meters for active energy (Chinese: 电测量设备（交流） 特殊要求 第2部分：静止式谐波有功电能表)

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)

GB/T 13777-2024 Chinese PDF (GB/T13777-2024) GB/T 42125.5-2024 English versions: GB/T 45539-2025GB 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