DIN EN ISO 4048 E:2017 皮革 化學(xué)測試 可溶于二氯甲烷的物質(zhì)和游離脂肪酸含量的測定(ISO/DIS 4048:2017) 草案
Draft Document - Leather - Chemical tests - Determination of matter soluble in dichloromethane and free fatty acid content (ISO/DIS 4048:2017); German and English version prEN ISO 4048:2017