II-VI Incorporated (II-VI) develops, refines, manufactures and markets high-technology materials and derivative precision components and products for precision use in industrial, military, medical and aerospace applications. The products are supplied to manufacturers and users in a range of markets, including industrial, defense, medical and telecommunications. It focuses on providing products, such as high-power laser material processing systems, military fire control and missile guidance devices, fiber optics and wireless communication systems, medical diagnostic systems, and various industrial, commercial and consumer thermal management systems. It develops, manufactures, refines and markets infrared and near-infrared laser optical elements, military infrared optical components, selenium and tellurium metals and chemicals, thermo-electric cooling and power generation solutions, and single crystal silicon carbide substrates.