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Why does each piece contain 24% lead oxide?

April 26, 2017contain lead oxide piece

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Why does each piece contain 24% lead oxide?

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The international level for lead oxide in manufactured glass is 16%, while modern crystal contains 24%. The higher percentage of lead oxide in crystal raises its refractive index, brilliant transparency and good performance. It even produces a clearer ring while striking against another glass compared to that without lead oxide. This is currently the Liuligongfang production standard.