Black stone by the volcano erupted lava spewed surface after rapid cooling and into, containing a large number of large, small pore. Air hole in the rock, it is in a honeycomb, honeycomb stone, also known as: black stone; micro pore called Hainan or Sanjiang black stone; referred to as the volcano stone. Black stone stone superior performance, unique style, except having the general characteristics of ordinary stone, also has a sound absorption and sound insulation, heat absorption heat storage, anti-skidding, Naisuan Jian," breathe" and other special features, can be widely used in the construction of the wall decoration, background, municipal roads, squares, residential quarters on the ground pavement, it is various types of antique architecture, European architecture, landscape architecture features the first stone
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