
Feather and down - Test methods - Determination of the quantitative composition of feather and down (manual method)
出版:Osterreichisches Normungsinstitut/Austrian Standards

专家解读视频
EN 12131 : 1998 - Identical
EN 12131:2018 - Identical
EN 12131:2018 - Identical
EN 12131 : 1998 - Identical