石材有许多优点：天然材质、光亮晶莹、坚硬永久、高贵典雅。各类公用、商用建筑无不以装饰石材来提高“档次”。随着国人收入水平的提高，在装饰装修热中，石材的使用也随之进入千家万户之中。然而，近段时间以来，各种媒体相续报道了石材的放射性问题，使石材得以“天然” 、 Stone has many advantages: natural materials, shiny crystal, hard permanent, elegant. All kinds of public, commercial buildings are all decorative stone to improve the “grade.” With the improvement of people’s income level, in the decoration decoration heat, the use of stone also will be among the families into. However, recently, a variety of media coverage of the succession of stone radioactive issues, so that stone can be “natural”