首页 > 标准下载>GB/T 19789-2021 包装材料 塑料薄膜和薄片氧气透过性试验 库仑计检测法 Packaging material—Test method for oxygen gas permeability characteristics of plastic film and sheeting—Coulometric sensor免费下载
GB/T 19789-2021 包装材料 塑料薄膜和薄片氧气透过性试验 库仑计检测法 Packaging material—Test method for oxygen gas permeability characteristics of plastic film and sheeting—Coulometric sensor