GB/T 33993-2024 English PDF (GB/T33993-2024) GB/T 20042.5-2024 1-2024_Chinese: Methods for chemical analysis

1-2024_Chinese: Methods for chemical analysis of tin - Part 1: Determination of copper

GB/T 17554

39-2025_Chinese: Requirements of the greenhouse gas emissions accounting and reporting - Part 39: Calcined gypsum enterprises (Chinese: 温室气体排放核算与报告要求 第39部分：建筑石膏生产企业)

2-2024_Chinese: Assessment of uncertainty in the calibration and use of flow measurement devices - Part 2: Non-linear calibration relationships (Chinese: 流量测量装置校准和使用不确定度的评估 第2部分：非线性校准关系)

600-2025_Chinese: Geometrical product specifications (GPS) - Surface texture: Areal - Part 600: Metrological characteristics for areal topography measuring methods (Chinese: 产品几何技术规范（GPS） 表面结构：区域法 第600部分：区域形貌测量方法的计量特性)

GB/T 33993-2024 English PDF (GB/T33993-2024) GB/T 20042.5-2024 1-2024_Chinese: Methods for chemical analysisGB T 33993 2024_Chinese: Two dimensional code for commodity (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 33993 2024