GB/T 12967.6-2022铝及铝合金阳极氧化膜及有机聚合物膜检测方法第6部分:色差和外观质量标准
英文:Test methods for anodic oxidation coatings and organic polymer coatings on aluminium and aluminium alloys—Part 6: Det...
英文:Test methods for anodic oxidation coatings and organic polymer coatings on aluminium and aluminium alloys—Part 6: Det...