Markan Sales Co, 604 Center St, Marysville, KS 66508, US

Georgia-Pacific Gypsum Corporation is one of the leading manufacturers of gypsum wallboard products in North America. The company and its affiliate, Georgia-Pacific Canada, have manufacturing operations that include nearly 15 gypsum wallboard plants, four joint-systems plants, four industrial plaster facilities and three gypsum wallboard paper plants in the United States. In addition, Georgia-Pacific Gypsum Corporation has three gypsum wallboard facilities and one joint-systems plant serving the needs of the Canadian marketplace. Georgia-Pacific Gypsum Corporation and Georgia-Pacific Canada's feature brands include a full line of ToughRock gypsum products, ToughRock joint finishing products and the proprietary group of glass mat DensGuard Products, which provides unequaled moisture and mold resistance for residential and commercial construction.