Olectra Greentech Limited manufactures and supplies composite polymer insulators in India. The company operates through Composite Polymer Insulators and Electric Buses segments. It manufactures 1200KV, 330-420KV, 220-245KV, 110-132KV, 52-77KV, 33-36KV, 22-28KV, and 10-15KV insulators for transmission and distribution; and tonne, bracket tube, and stay arm insulators for railways. It also manufactures and sells electrical buses. The company was formerly known as Goldstone Infratech Limited and changed its name to Olectra Greentech Limited in July 2018. The company was incorporated in 2000 and is headquartered in Hyderabad, India.