Operational for more than 100 years, Weyerhaeuser is one of the largest companies that manufacture a range of forest products. It offers real estate construction, research and development services. The company specializes in harvesting and growing trees. It utilizes mobile equipment, power generation, electrical apparatus and process machinery. Weyerhaeuser sells sample cutters, computers, copiers, disk drives, modems, monitors, power suppliers, scanners, printers and printing equipment. It uses cellulose fibers to design car seats, clothing accessories, surgical gowns and light switch components. The company manufactures a variety of lumber from over 15 species, specializing in alder, red oak, hard and soft maple, cherry and white oak. It supports and raises funds for various community organizations. With a location in Richmond, Va., Weyerhaeuser operates several offices in nearly 10 countries.