DIN EN ISO 23321:2021 涂料和清漆用溶剂. 工业用除盐水. 规范和试验方法(ISO 23321-2019); 德文版本EN ISO 23321-2020
Solvents for paints and varnishes - Demineralized water for industrial applications - Specification and test methods (ISO 23321:2019); German version EN ISO 23321:2020