Volcanic stone is a kind of functional environmental protection material. It is a very precious porous stone formed by volcanic glass, minerals and bubbles after volcanic eruption . Volcanic stone contains sodium, magnesium, aluminum, silicon, calcium, titanium, manganese, iron, Dozens of minerals and trace elements, such as nickel, cobalt, and molybdenum, have no radiation and have far-infrared magnetic waves. After the relentless volcanic eruption, tens of thousands of years have passed before humans have discovered its value. Now its application fields have been expanded to construction, water conservancy, grinding, filter materials, garden landscaping, aquarium, soilless cultivation, health massage stones and other fields, playing an irreplaceable role in all walks of life.
Common pecifications: 1-3mm , 3-5mm , 5-8mm , 8-10mm , 1-3cm , 3-5cm, etc.