DIN EN ISO 22568-4:2021 脚和腿保护器 鞋类部件的要求和测试方法 第4部分:非金属抗穿孔插入物(ISO/DIS 22568-4:2021)
Foot and leg protectors - Requirements and test methods for footwear components - Part 4: Non-metallic perforation resistant inserts (ISO/DIS 22568-4:2021); German and English version prEN ISO 22568-4:2021