RHI AG is a global supplier of high-grade refractory products, systems and services typically used for high-temperature industrial processes. The company was established in 1834 as a fireclay factory, and now produces over 1.5 million tons of refractory products annually, serving more than 10,000 customers from the steel, cement, glass and energy industries. RHI AG employs approximately 7,900 workers in locations in Europe, North and South America and Asia, and is headquartered in Vienna, Austria.