Olectra Greentech Ltd(Formerly Goldstone Infratech Ltd) is a public listed company. It was founded in 1992 in Hyderabad. It is a part of the highly diversified Goldstone Group, with major interests in Composite Insulators, Amorphous core-distribution transformers, Data Analysis, IT consulting and Electric Buses. GIL is currently traded on the Bombay Stock Exchange (BSE), the National Stock Exchange (NSE). GIL is an ISO-9001:2008 certified company and its R & D Center is recognized by the Department of Scientific and Industrial Research, Govt. of India. GIL is a market leader through creative technologies and commitment to excellence. GIL is the largest manufacturer and suppliers of Composite Insulators in India. Composite Insulators are well used across the globe as a significant technology breakthrough.