5A-Pressure swing adsorption. Air cleaning dehydration and carbon dioxide. 4A-air, gas, alkanes, refrigerant gas and liquid depth and dry. Argon gas making and purification. pharmaceutical packaging, electronic components and metamorphic material static and dry. paint, fuel, as dehydrating agent in the coating. 3A- all kinds of liquid (such as ethanol) dry 2, air dry 3, refrigerant drying 4, natural gas, methane gas is dry 5, unsaturated hydrocarbon and cracking gas, ethylene, acetylene, propylene, butadiene, dry. Note: Molecular sieve before use shall prevent the adsorption of water, gas or liquid, organic otherwise, shall be renewable. 25 kg carton packing or 55 gallon drums