Desheng 4A Molecular Sieve Absorbent Desiccant for gas etc adsorbent for air purification,et bead or strip can be as required ... angstroms and exclude those larger. Such adsorbable molecules include simple gas molecules such as oxygen, nitrogen, carbon dioxyde and straight ... are excluded. Application Drying and removing of CO2 from natural gas, LPG, air, inert and athmospheric gases, etc. Removal of ...