GB/T 15971-2023 Chinese PDF (GB/T15971-2023) GB/T 44912-2024 1-2024_Chinese: Cybersecurity technology - Hash-functions

1-2024_Chinese: Cybersecurity technology - Hash-functions - Part 1: General (Chinese: 网络安全技术 杂凑函数 第1部分：总则)

English versions: GB/T 45276-2025

2-2025_Chinese: Optics and photonics - Specifications for telescopic sights - Part 2: High-performance instruments (Chinese: 光学和光子学 瞄准望远镜规范 第 2 部分：高性能仪器)

English versions: GB 17799

1-2024_Chinese: Dentistry - Materials for dental instruments - Part 1: Stainless steel (Chinese: 牙科学 牙科器械用材料 第1部分：不锈钢)

GB/T 15971-2023 Chinese PDF (GB/T15971-2023) GB/T 44912-2024 1-2024_Chinese: Cybersecurity technology - Hash-functionsGB T 15971 2023_Chinese: Specification for tour guide service (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 15971 2023