Product description:

Refers to volcanic eruptions, hot gas, liquid and solid on the ground to fall to the ground pile up the different shapes of the hills, because the bulk of the magma erupted when slag gas, solid magma, temperature and pressure drops rapidly, chemical and physical changes have taken place, so becomes volcanic rock magma.

Product features:

With inertia, corrosion in the biofilm, biochemical reaction shown in environment is relatively stable, its surface water is strong, coarse porous, adherent biofilms faster and more, with a positive charge, is advantageous to the growth of biofilm, biofilm is a good carrier, elements of fixed by microorganisms, no inhibitory effect, does not affect the activity of microorganism.