[轻工行业标准] QB/T 5643-2021 室内装修苯系物清除液
[国外标准] SAE AMS 5643Q-2003 Steel, Corrosion-Resistant, Bars, Wire, Forgings, Tubing, and Rings 16Cr - 4.0Ni
[化工行业标准] HG/T 5643-2019 管式分子筛透水膜组件
[国家标准] GB/T 5643-2008 扩口式过板直通管接头