Personal protective equipment - Footwear protecting against risks in foundries and welding - Part 1: Requirements and test methods for protection against risks in foundries - Amendment 1 (ISO 20349-1:2017/Amd 1:2020)
个人防护设备铸造厂和焊接防护鞋靴第1部分:铸造厂风险防护要求和试验方法修改件1