
Anodic oxide coatings and organic polymer coatings on aluminium and its alloys—Measurement of specular reflectance and specular gloss
NORMA vydána dne 25.5.2026
Designation standards: GB/T 20503-2026
Note: K dispozici od: prosinec 2026
Publication date standards: 25.5.2026
Country: Chinese technical standard
Kategorie: Technické normy GB