GB 44019-2024 Chinese PDF GB/T 45359.2-2025 20-2024_Chinese: Chemical analysis methods for

20-2024_Chinese: Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides - Part 20: Determination of minor amounts of fluorine and chlorine in rare earth oxides - Ion chromatography method (Chinese: 稀土金属及其氧化物中非稀土杂质化学分析方法 第20部分：稀土氧化物中微量氟、氯的测定 离子色谱法)

English versions: GB/T 45310-2025

English versions: GB/T 44915-2024

GB/T 6595-2025_Chinese: Plastics - Test method for fish eye count of polypropylene resin (Chinese: 塑料 聚丙烯树脂鱼眼测试方法)

GB/T 44919-2024_Chinese: Micro-electromechanical systems(MEMS) technology - Bulge test method for measuring mechanical properties of thin films (Chinese: 微机电系统（MEMS）技术 薄膜力学性能的鼓胀试验方法)

GB 44019-2024 Chinese PDF GB/T 45359.2-2025 20-2024_Chinese: Chemical analysis methods forGB 44019 2024_Chinese: Safety requirements for tank cleaning washing operation of chemical tankers (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 44019 2024