After the examination, the sandstone is zero radioactivity, non-toxic， tasteless, no pollution ，sound-absorbing, moisture-absorbing, moistureproof, slip resistance , light-absorbing and so on,it is a natural environmental protection stone material which t
After the examination, the sandstone is zero radioactivity, non-toxic， tasteless, no pollution ，sound-absorbing, moisture-absorbing, moistureproof, slip resistance , light-absorbing and so on,it is a natural environmental protection stone material which t
经检测，砂岩是一种具有无放射性，无毒,无味，无污染,吸音，吸水，防潮，防滑，吸光等特点的天然环保石材，是大理石与花岗岩不可比拟的。