UNI EN ISO 9202 : 2016现行
JEWELLERY - FINENESS OF PRECIOUS METAL ALLOYS
出版：Ente Nazionale Italiano di Unificazione (UNI)
专家解读视频
Defines a range of fineness of precious metal alloys (excluding solders) recommended for use in the field of jewellery.
EN ISO 9202 : 2016 - Identical
ISO 9202 : 2014 - Identical
EN ISO 9202:2019 - Identical
EN ISO 9202 : 2016 - Identical
ISO 9202 : 2014 - Identical
EN ISO 9202:2019 - Identical
