While many companies from other countries have been moving into Forsyth County in recent years, one local company has been selling its products overseas for nearly 20 years. CO2 Air, housed in a 9,000-square-foot facility on Ventura Drive off Pilgrim Mill Road, has been in Forsyth since 1993.The company manufactures custom machinery used in the production of dry ice. It also distributes liquid carbon dioxide used for various purposes, including soft drink carbonation, as a PH controller and an antibacterial agent.