一、前言 JC/T202-92(96)标准自93年实施以来,一直未修订。随着我国板材加工业的发展和对矿山开采设备技术的投入,荒料在块度上和成方性上都比过去有了很大提高。原标准JC/T202-92(96)在许多方面已不适应当前市场经济发展要求。为了使我国天然大理石宝贵资源能得到合理开发利用,产品标准能与国际贯 I. Preface The JC / T202-92 (96) standard has not been revised since its implementation in 1993. With the development of plate processing industry in our country and the investment in mining equipment technology, blocks have been greatly improved in scale and sophistication over the past. The original standard JC / T202-92 (96) in many ways has not adapted to the current market economic development requirements. In order to make our country’s natural marble valuable resources can be developed and utilized, product standards and international