GB/T 2879-2024 Chinese PDF (GB/T2879-2024) GB/T 20183.2-2024 GB/T 45633-2025_Chinese: Collection and processing

GB/T 45633-2025_Chinese: Collection and processing of human saliva biomaterial (Chinese: 人类唾液样本采集与处理)

GB/T 44890-2024_Chinese: Specification for administrative license (Chinese: 行政许可工作规范)

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)

English versions: GB/T 45591-2025

2-2024_Chinese: Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis - Part 2: Determining the inclusion ratings of steels by automatic image analysis and stereology (Chinese: 应用自动图像分析测定钢和其他金属中金相组织、夹杂物含量和级别的标准试验方法 第2部分：钢中夹杂物级别的图像分析与体视学测定)

GB/T 2879-2024 Chinese PDF (GB/T2879-2024) GB/T 20183.2-2024 GB/T 45633-2025_Chinese: Collection and processingGB T 2879 2024_Chinese: Hydraulic fluid power Cylinders Dimensions and tolerances of housings for single acting piston and rod seals in reciprocating applications (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 2879 2024