National Gypsum is one of the largest gypsum board producers in the world. Headquartered in Charlotte, NC, the company is a full-line supplier, recognized in the industry for customer service and product quality.Gypsum board is the company's primary product, and National Gypsum is the second largest producer in the United States. The company has 17 operating gypsum board plant locations strategically located near metropolitan areas. National Gypsum's gypsum board is marketed under the Gold Bond® BRAND