GB/T 26990-2023 Chinese PDF (GB/T26990-2023) GB/T 21666-2025 GB/T 45402-2025_Chinese: Smart city -

GB/T 45402-2025_Chinese: Smart city - City intelligent center - Reference architecture (Chinese: 智慧城市 城市智能中枢 参考架构)

GB 4824-2025_Chinese: Industrial

4-2025_Chinese: Information technology - Building information model(BIM) software - Part 4: Mesh model (Chinese: 信息技术 建筑信息模型（BIM）软件 第4部分：网格模型)

YY/T 1938-2024_Chinese: Medical sodium hyaluronate dressing (Chinese: 医用透明质酸钠敷料)

5-2025_Chinese: National food safety standard - Determination of protein in food (Chinese: 食品安全国家标准 食品中蛋白质的测定)

GB/T 26990-2023 Chinese PDF (GB/T26990-2023) GB/T 21666-2025 GB/T 45402-2025_Chinese: Smart city -GB T 26990 2023_Chinese: Fuel cell electric vehicles Onboard hydrogen system technical specifications (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 26990 2023