广州大新象牙工艺厂厂长罗裕忠现场表演火烧象牙。据他介绍，这是最简单的分辨象牙真伪的方法。用火烧，象牙既不会着火，也不会损坏。 本报讯 （记者林晓丽 通讯员穗经贸宣）广州牙雕行业首次大规模牙雕作品专题展昨日起 ... 广州牙雕行业牙雕作品专题展昨天开展
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