GB/T 18910.21-2024 Chinese PDF (GB/T18910.21-2024) GB/T 10932-2024 4-2023_Chinese: Buried polyethylene(PE) piping systems

4-2023_Chinese: Buried polyethylene(PE) piping systems for the supply of gaseous fuels - Part 4: Valves (Chinese: 燃气用埋地聚乙烯（PE）管道系统 第4部分：阀门)

5-2024_Chinese: Condition monitoring and diagnostics of machines - Requirements for qualification and assessment of personnel - Part 5: Lubricant laboratory technician/analyst (Chinese: 机器状态监测与诊断 人员资格与人员评估的要求 第5部分：润滑剂实验室技术人员/分析人员)

GB/T 5709-2025_Chinese: Textiles - Nonwovens - Vocabulary (Chinese: 纺织品 非织造布 术语)

GB/T 44971-2024_Chinese: Soil selenium grade (Chinese: 土壤硒含量等级)

GB/T 45486-2025_Chinese: Ships and marine technology - Ballast water management systems (BWMS) - Computational physical modelling and calculations on scaling of UV reactors (Chinese: 船舶与海上技术 压载水管理系统（BWMS） 紫外反应器的比例缩放数值模拟与计算)

GB/T 18910.21-2024 Chinese PDF (GB/T18910.21-2024) GB/T 10932-2024 4-2023_Chinese: Buried polyethylene(PE) piping systemsGB T 18910. 21 2024_Chinese: Liquid crystal display devices Part 2 1: Passive matrix monochrome LCD modules Blank detail specification (Chinese: 2 1 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18910. 21 2024