
Jewellery - Colours of gold alloys - Definition, range of colours and designation (ISO 8654:2018)
出版:Standardiserings-Kommissionen I Sverige

專家解讀視頻
ISO 8654:2018 specifies a limited number of colours of gold alloy and the method to measure colours.
ISO 8654 : 2018 - Identical
EN ISO 8654 : 2018 - Identical
ISO 8654 : 2018 - Identical
EN ISO 8654 : 2018 - Identical