NBN EN 28654:1993现行
Colours Of Gold Alloys - Definition, Range Of Colours And Designation
出版：Belgian Standards
专家解读视频
Specifies a limited number of colours of gold alloys. Applies to jewellery, and to watch cases and accessories with gold alloy coverings or watch cases and accessories made of gold alloys. Coverage includes measurement method and colour slips.
EN 28654:1992 - Identical
UNE EN 28654:1994 - Identical
SS EN 28654 Ed. 1 (1993) - Identical
ISO 8654:1987 - Identical
UNI EN 28654:1994 - Identical
NF EN 28654:1993 - Identical
I.S. EN 28654:1993 - Identical
BS EN 28654:1993 - Identical
ONORM EN 28654:1993 - Identical
DIN EN 28654 (1993-03) - Identical
SN EN 28654:1993 - Identical
