II-VI develops, manufactures, and markets engineered materials, optoelectronic components, and devices for use in optical communications, industrial, aerospace and defense, consumer electronics, semiconductor capital equipment, life sciences, and automotive applications and markets. Co.'s products are deployed in a variety of applications, including: optical, data, and wireless communications products; laser cutting, welding, and marking operations; 3D sensing consumer applications; aerospace and defense applications including intelligence, surveillance, and reconnaissance; semiconductor processing tools; and thermoelectric cooling and power-generation solutions.