I.S. EN ISO 9202:2016现行
Jewellery - Fineness of Precious Metal Alloys (iso 9202:2014)
出版：National Standards Authority of Ireland
专家解读视频
Describes a range of fineness of precious metal alloys (excluding solders) recommended for use in the field of jewellery.
EN ISO 9202:2016 - Identical
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
