GCHI Giant Cement Holding, Inc. is a proud producer of top quality portland, slag cement, and masonry cements. Headquartered in Harleyville, South Carolina, GCHI provides the materials for highways, bridges and buildings. GCHI Giant Cement Holding, Inc is comprised of four businesses. Giant Cement , Keystone Cement, Dragon Products, and Grr (Giant Resource Recovery) . Our goal is to provide our customers with the highest quality products and services, and to be the supplier of choice in the construction industry. Our mission is to make a difference in the world of construction by creating sustainable value for our shareholders, employees, customers and communities.