-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 -Improve water quality -Perfect for providing the ideal living environment for your aquarium because it has beneficial denitrifying bacteria. -Ideal for Aquascaping especially for bucephalandra
