XG Sciences manufactures graphene nanoplatelets for use in advanced materials and energy applications. In words of Mike Knox, CEO, the company has 80 tons of annual production capacity, the world’s largest for this type of nano-material. In January 2011, 19% of XG Sciences was purchased by Hanhwa Chemical, a Korean chemical company which dates back to 1964. Hanhwa expands well beyond Korea into other Asian countries and has rights to sell graphene in India and China. They invest in graphene in the form of carbon nanotubes, for various industrial uses. Hanhwa is listed on the Korean stock exchange under number 009830. Another 20% of XG Sciences is owned by POSCO, one of the world’s largest producers of steel, also a Korean company. POSCO uses graphene from XG Sciences to develop new materials and is listed on the New York Stock Exchange under the code NYSE: PKX.