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IPRG is short for Ion-plating Rose Gold. It is composed by rose gold layer on surface and titanium carbonibide or titanium carbonitride alloy layer underneath. The rose gold layer has several variations depending on the proportions of gold composed. Common variations includes 75%, 85%, 90% and 95% which implies that there Is 75% gold, 85% gold, 90% gold and 95% gold respectively In the rose gold layer. The proportion of gold could be adjusted on the request of customer demand. IPRG Is widely used in middle and high-end watches, jewelries and other metal products.
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