... carbons made of selected virgin coal. widely used for gas/air/water purification. CG4050,CG4060,CG3050,CG3060 are ... Purification and refining for Gas used in Chemical, Pharm and Food industry including acidic gas such as Hydrochloric acid, ... dioxide, hydrogen, nitrogen, acetylene, chlorine, ethylene, cracking gas, inert gas, etc. Indoor air pollution removalSolvent recoveryWater purification, removing ...