GB/T 45521-2025 Chinese PDF (GB /T45521-2025) GB 45185-2024 2-2025_Chinese: Optics and photonics -

2-2025_Chinese: Optics and photonics - Specifications for binoculars

2-2025_Chinese: Nanotechnology - Nanogenerator - Part 2: Test methods for electric performance of triboelectric nanogenerators (Chinese: 纳米技术 纳米发电机 第2部分：摩擦纳米发电机电性能测试方法)

English versions: GB/T 45510-2025

English versions: GB/T 44931-2024

GB/T 45404-2025_Chinese: Data security technology - Requirements for large Internet companies internal personal information protection supervision agency (Chinese: 数据安全技术 大型互联网企业内设个人信息保护监督机构要求)

GB/T 45521-2025 Chinese PDF (GB /T45521-2025) GB 45185-2024 2-2025_Chinese: Optics and photonics -GB T 45521 2025_Chinese: Smart community infrastructures Guidelines on data exchange and sharing for community infrastructures based on geographic information (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45521 2025