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Improving the surface of calcium carbonate - produced from living things eg mother of pearl or natural or cultured pearls
Improving the surface of calcium carbonate - produced from living things eg mother of pearl or natural or cultured pearls
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机译:改善碳酸钙的表面-由生物产生,例如珍珠母或天然或人工养殖的珍珠
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摘要
Method comprises treating the surface with a F contg. soln. and forming a protective film of CaF2, strongly fixed, durable, mechanically hard and having opaline luster.
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