About Us

Cornerstone operates a world-class, highly synergistic manufacturing facility, the Cornerstone Energy Park. Known for its high-quality products, Cornerstone is recognized worldwide for its reliability as a critical global supplier of intermediate chemicals that are used in diverse industrial and consumer applications, including water treatment, oil recovery, agriculture, plastics, furniture and flooring, and performance coatings. Cornerstone is the sole manufacturer of melamine in North America, a leading manufacturer of acrylonitrile in the U.S. and a top supplier of sulfuric acid in the Gulf region.