Draft Document - Vitreous and porcelain enamels - Characteristics of enamel coatings applied to steel panels intended for architecture (ISO 28722:2008); German version FprEN ISO 28722:2010
文件草案.釉瓷和搪瓷.建筑用钢板用搪瓷涂层的特性(ISO 28722-2008);德文版FprEN ISO 28722:2010