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