GB 25972-2024 Chinese PDF GB/T 16262.1-2025 English versions: GB/T 45603-2025

English versions: GB/T 45603-2025

GB 44019-2024_Chinese: Safety requirements for tank cleaning-washing operation of chemical tankers (Chinese: 化学品船清洗舱安全作业要求)

GB/T 44882-2024_Chinese: Information technology - Closed captioning (Chinese: 信息技术 可关闭字幕)

20-2025_Chinese: Methods for chemical analysis of tungsten concentrates - Part 20: Determination of mercury content - Solid sampling and direct mercury analysis method (Chinese: 钨精矿化学分析方法 第20部分：汞含量的测定 固体进样直接测定法)

6-2025_Chinese: Methods for chemical analysis of lead concentrates - Part 6: Determination of bismuth content (Chinese: 铅精矿化学分析方法 第6部分：铋含量的测定)

GB 25972-2024 Chinese PDF GB/T 16262.1-2025 English versions: GB/T 45603-2025GB 25972 2024_Chinese: Gas fire extinguishing systems and components (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 25972 2024