NS-EN ISO 9202:2019由SCC 发布于 2019-08-01。
NS-EN ISO 9202:2019 的最新版本是哪一版?
最新版本是 NS-EN ISO 9202:2019 。
Full Description ADOPTED_FROM:EN ISO 9202:2019 This document specifies a range of fineness of precious metal alloys (excluding solders) recommended for use in the field of jewellery. NOTE There is a possibility that national legal requirements for the designation, marking, and stamping of finished articles exist in the respective countries.
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