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document.write("陕西省开发世界级石材“夜蓝钻”");
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document.write("中国的优势矿产");
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document.write("全国石材标准化工作研讨会在京召开");
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document.write("世博会给上海石材业注入巨大商机");
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document.write("中日石材业界第一次共赢石材高峰对话");
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document.write("当务之急我国石材资源浪费要严重制定规划");
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