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italian jewelry wholesalers italy Consultation record · Answer on 2021-10-11nWhere is Zhou Dafu TMARK Diamond Code labeling hello! Chow Tai Fook T Mark diamond jewelry, encoding mark on the diamond table, it uses nanotechnology, only 5 nanometers, about one -fixture of the thickness of the fingerprint. It is currently the smallest diamond mark in the world. Through this mark, the source of diamonds can be traced back to the source of the diamond to ensure the reliability of quality and source, and ensure that it will not be second -hand diamonds, recycling diamonds, and artificial diamonds. At the same time, you can record your love story on your mobile app. 0