(1) not corrosive to equipment. In the process of adsorption/desorption，the silica gel remains solid with the physical and chemical stability, it overcomes the weakness that the lithium chloride adsorbent is easily to be liquefied and escape, the silica gel even can keep the wheel surface no condensation under high humidity (100%), and won’t be corrosive to surrounding equipment.
(2) easy to upkeep. Even if in long-term use, silica gel wheel also won't appear the phenomenon of condensation, and also does not need maintenance during operation.
(3) won't burn. the substrate of silica gel is made of a special kind of synthesis materials of heat resistant, such as glass fiber paper, ceramic fiber paper, etc. Its particular strengths is fireproof and not smoke under high temperature.