Lava rock / Volcanic stone (commonly known as pumice or porous basalt) is a very precious porous and a functional kind of environmental protection stone formed by volcanic glass, minerals and bubbles after volcanic eruption. It have many pores, light weight , high strength and thermal insulation .
It is a kind of precious and polyporous stone, and formed by volcanic glass, mineral and air bubble in the process of volcanic eruption.
It contains sodium, magnesium, aluminum, silicon, calcium, titanium, manganese, iron, nickel, cobalt, molybdenum, and other dozens of minerals and trace elements.
It has no radiation.
It has far infrared magnetic wave, Natural lunar surface stone.
Slide-proof, acid & alkali proof.
Sound absorbing and insulation.