GB/T 19688-2022 Chinese PDF (GB/T19688-2022) GB/T 21536-2024 GB/T 45056-2024_Chinese: Recycling materials for

GB/T 45056-2024_Chinese: Recycling materials for lithium (Chinese: 再生锂原料)

4-2024_Chinese: Grain and oil storage - Monitoring and control system of stored-grain condition - Part 4: Information exchange interface protocol (Chinese: 粮油储藏 粮情测控系统 第4部分：信息交换接口协议)

GB/T 14420-2024_Chinese: Analysis of water used in boiler and cooling system - Determination of chemical oxygen demand - Rapid method with potassium dichromate (Chinese: 锅炉用水和冷却水分析方法 化学耗氧量的测定 重铬酸钾快速法)

GB/T 45516-2025_Chinese: Leather and fur - Chemical tests - Determination of ethylene glycol ethers content (Chinese: 皮革和毛皮 化学试验 乙二醇醚类物质含量的测定)

GB/T 19688-2022 Chinese PDF (GB/T19688-2022) GB/T 21536-2024 GB/T 45056-2024_Chinese: Recycling materials forGB T 19688 2022_Chinese: Information and documentation Bibliographic data element directory for use in data exchange and enquiry (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19688 2022