Characteristics: Transparent or translucent glass-like pellet or lump. average pore diameter: 2.0-3.0mm; specific surface area: 650-800m2/g; pore volume: 0.35-0.45ml/g; specific heat:0.92KJ/kg.; thermal conductivity:0.63KJ/m.hr.. Use: Mainly used for drying and moisture proof, may also be used as catalyst carriers, adsorbents, separators and variable-pressure adsorbents, etc.