GB/Z 45261-2025 Chinese PDF (GB /Z45261-2025) GBZ45261-2025 1-2024_Chinese: Smart city - City

1-2024_Chinese: Smart city - City digital twin - Part 1: Technical reference architecture (Chinese: 智慧城市 城市数字孪生 第1部分：技术参考架构)

GB/T 45439-2025_Chinese: Technical specification for the application of traceability two-dimensional code on fuel gas cylinders and fuel gas cylinder valves (Chinese: 燃气气瓶和燃气瓶阀溯源二维码应用技术规范)

English versions: GB/T 18376

English versions: GB/T 45161-2024

GB 45671-2025_Chinese: Safety technical specifications for construction waterproof coatings (Chinese: 建筑防水涂料安全技术规范)

GB/Z 45261-2025 Chinese PDF (GB /Z45261-2025) GBZ45261-2025 1-2024_Chinese: Smart city - CityGBZ45261 2025_Chinese: Course development guide for education about standardization Fundamentals of conformity assessment (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GBZ45261 2025