... made of selected virgin coal. widely used for gas/air/water purification. CG4050,CG4060,CG3050,CG3060 are pelletized ... the following applications:Purification and refining for Gas used in Chemical, Pharm and Food industry including ... hydrogen, nitrogen, acetylene, chlorine, ethylene, cracking gas, inert gas, etc.Indoor air pollution removalSolvent recoveryWater purification, removing toxic and harmful ...