GB/T 25320.4-2024 Chinese PDF (GB /T25320.4-2024) GB/T 21551.5-2024 7-2024_Chinese: Methods for chemical analysis

7-2024_Chinese: Methods for chemical analysis of silver - Part 7: Determination of gold and palladium content - Inductively coupled plasma emission spectrometry (Chinese: 银化学分析方法 第7部分：金、钯量的测定 电感耦合等离子体发射光谱法)

English versions: GB 31648-2025

English versions: GB/T 18216

1-2025_Chinese: Norm of water intake for service industry in the Yellow River basin - Part 1: Hotel (Chinese: 黄河流域服务业用水定额 第1部分：宾馆)

1-2025_Chinese: Semi-finished spectacle lens blanks - Part 1: Single-vision and multifocal (Chinese: 半成品镜片毛坯 第1部分：单焦和多焦)

GB/T 25320.4-2024 Chinese PDF (GB /T25320.4-2024) GB/T 21551.5-2024 7-2024_Chinese: Methods for chemical analysisGB T 25320. 4 2024_Chinese: Power systems management and associated information exchange Data and communications security Part 4: Profiles including MMS and derivatives (Chinese: 4MMS) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 25320. 4 2024