Anh
quality grade
quality level
quality standard
standard of quality
Đức
Guetennorm
Guetestandard
Guetestufe
Pháp
norme de qualité
Guetennorm,Guetestandard,Guetestufe /TECH/
[DE] Guetennorm; Guetestandard; Guetestufe
[EN] quality grade; quality level; quality standard; standard of quality
[FR] norme de qualité