... number of organic impurities such as Fe2O3,CaO,MgO,Al2O3. The high-quality diatomite appears white, with Sio2 content over 70%. Monomer ... unique microcellular structure endows them many excellent and unique functions: high pore volume, large specific surface, small specific gravity, ... .3 It also can be arranged according to the customer request.6)photo: factory price---high quality diatomite product