GB/T 44953-2024 Chinese PDF (GB /T44953-2024) GB/T 15566.2-2024 2-2025_Chinese: Household electric direct-acting room

2-2025_Chinese: Household electric direct-acting room heaters - Methods for measuring performance - Part 2: Additional provisions for the measurement of the radiant factor (Chinese: 家用直接作用式房间电加热器 性能测试方法 第2部分：辐射系数测量的附加规定)

2-2024_Chinese: Non-destructive testing - Penetrant testing - Part 2: Testing of penetrang materials (Chinese: 无损检测 渗透检测 第2部分：渗透材料的检验)

GB/T 45134-2025_Chinese: Petroleum drilling and production equipment - Near-bit geosteering drilling systems (Chinese: 石油天然气钻采设备 近钻头地质导向钻井系统)

2-2024_Chinese: Programmable controllers - Part 2: Equipment requirements and tests (Chinese: 可编程序控制器 第2部分: 设备要求和测试)

English versions: GB 31648-2025

GB/T 44953-2024 Chinese PDF (GB /T44953-2024) GB/T 15566.2-2024 2-2025_Chinese: Household electric direct-acting roomGB T 44953 2024_Chinese: Technical specification for lightning disaster investigation (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 44953 2024