GB/T 37190-2023 Chinese PDF (GB/T37190-2023) GB/T 16311-2024 6-2024_Chinese: Printed board assemblies -

6-2024_Chinese: Printed board assemblies - Part 6: Evaluation criteria for voids in soldered joints of BGA and LGA and measurement method (Chinese: 印制板组装 第6部分:球栅阵列（BGA）和盘栅阵列（LGA）焊点空洞的评估要求及测试方法)

GB/T 17643-2025_Chinese: Geosynthetics - Polyethylene geomembrane (Chinese: 土工合成材料 聚乙烯土工膜)

31-2023_Chinese: Specification for classification and labelling of chemicals - Part 31: Precautionary label for workplace of chemicals (Chinese: 化学品分类和标签规范 第31部分：化学品作业场所警示性标志)

GB/T 45458-2025_Chinese: Method for determination of trace elements in attapulgite (Chinese: 凹凸棒石微量元素测定方法)

hardness and iron - Spectrophotometric detection by discrete analysis systems (Chinese: 锅炉用水和冷却水分析方法 磷酸盐、氯化物、硅酸盐、总碱度、酚酞碱度、硬度和铁的测定 基于间断分析系统的分光光度法)

GB/T 37190-2023 Chinese PDF (GB/T37190-2023) GB/T 16311-2024 6-2024_Chinese: Printed board assemblies -GB T 37190 2023_Chinese: Pipeline corrosion control engineering life cycle General requirements (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 37190 2023