GB/T 39365-2020.Leather-Physical and mechanical tests-Determination of dry heat resistance. GB/T 393...
GB国家标准
GB国家标准
GB国家标准
GB/T 39365-2020 皮革 物理和机械试验耐干热性的测定
GB/T 39365-2020.Leather-Physical and mechanical tests-Determination of dry heat resistance. 1范围 GB/T...