GB/T 6150.20-2025 Chinese PDF (GB /T6150.20-2025) GB/T 21099.3-2024 71-2024_Chinese: Communication networks and systems

71-2024_Chinese: Communication networks and systems for power utility automation - Part 7-1: Basic communication structure - Principles and models (Chinese: 电力自动化通信网络和系统 第7-1部分：基本通信结构 原理和模型)

GB/T 25045-2025_Chinese: Basalt fiber roving (Chinese: 玄武岩纤维无捻粗纱)

2-2025_Chinese: Information technology - Building information model(BIM) software - Part 2: Parameterized model (Chinese: 信息技术 建筑信息模型（BIM）软件 第2部分：参数化模型)

GB/T 43590

English versions: GB/T 45325-2025

GB/T 6150.20-2025 Chinese PDF (GB /T6150.20-2025) GB/T 21099.3-2024 71-2024_Chinese: Communication networks and systemsGB T 6150. 20 2025_Chinese: Methods for chemical analysis of tungsten concentrates Part 20: Determination of mercury content Solid sampling and direct mercury analysis method (Chinese: 20 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 6150. 20 2025