Volcanic Basalt Stone

This natural stone has many special features such as  sound absorbing and insulation, heat absorbing and preservation, water absorbing  and slide proof, Acid & alkali proof, "Breathing function" etc..  Now it is so called as “Functional Stone" which can be used safely in any  places for its low radiation, wind erosion proof and durability, sound  absorbing and noise lowering, water absorbing and air humidity keeping, dizzy  light avoiding, etc. in improving our environment and feelings.http://www.chinestone.com/