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Random¡¡¡¡ Volcanic The volcanic is a kind of porous basalt. The magma was brought to the surface of the earth when the volcano erupts£¬without the pressure it cools quickly and form many gas holes. By wind erosion£¬the stone broke into different block , It is porous and gray inside , random¡¡and dark or yellowish brown outside . We can choose the random volcanic from 30x30x30 to 60x60x60 , use for parterre , rockery , gardens etc . It is a ideal material.. Please look at http://www.volcanic.cn for more information . Email:stoneaa@126.com []
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