II-VI Incorporated

II-VI Incorporated is a manufacturer of optical materials and semiconductors. As of 2020, the company had 22,969 employees and their stock is listed at Nasdaq under the ticker symbol IIVI. The company's name is pronounced "Two Six Incorporated".
History.
II-VI Incorporated was founded in 1971 by Carl Johnson.
The name II-VI Incorporated is a reference to the groups II and VI in the periodic table, since the company started its business by producing cadmium telluride consisting of cadmium which belongs to group II and tellurium which belongs to group VI.
In 2004, II-VI Incorporated acquired Marlow Industries.
Locations and facilities.
II-VI Incorporated is headquartered in Saxonburg, Pennsylvania. The company also maintains additional manufacturing facilities in New Jersey and Champaign, Illinois