GB/T 39940-2021.Footwear manufacturing machines- Modular shoe repair equipment-Safety requirements. ...
GB国家标准
GB国家标准
GB国家标准
GB/T 39940-2021 制鞋机械 组合式修鞋机 安全要求
GB/T 39940-2021.Footwear manufacturing machines-Modular shoe repair equipment-Safety requirements. 1...