How to Choose a Reliable Non Destructive Precious Metal AnalyzerAs the methods of fraud continue to iterate, the detection methods also need to be upgraded synchronously. gold price is running at a high level, and the gold recycling and jewelry incoming quality inspection businesses are becoming increasingly popular, but the fraudulent tactics are also continuously upgrading. High fidelity adulteration of tungsten, rhenium, iridium, and other materials, as well as gold plating disguised as full gold - relying on th···...