Introduction of volcanic stone: Volcanic stone is a functional kind of environmental protection material. 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 stone Slide-proof, acid & alkali proof Sound absorbing and insulation Features of Volcanic Stone: Natural stone, sound absorbing and insulation Heat absorbing and preservation Water absorbing and slide-proof Acid & alkali proof Not radiation Not permeation Not poisonous and not odor Green and environmental-protection products with high quality Hyperfine and with high quality products Be used to interior decoration, outside decoration and paving public square Stone size : 3mm-8mm Application area: Contruction Aquarium Grinding Barbecue Filter Medium Water Conservancy Garden Landscaping Soilless culture Ornamental products Stone treatment. It can help to eliminate the toxin of human body and promote metabolism. NOTE: 1KG LAVA STONE EQUAL TO 1LITER OF NORMAL WATER BOTTLE