Tata Steel Limited is an Indian multinational steel-making company, is headquartered in Mumbai, Maharashtra, with its primary operations based in Jamshedpur, Jharkhand. It is a part of the Tata Group. Formerly known as Tata Iron and Steel Company Limited (TISCO), Tata Steel is among the largest steel producers globally, with an annual crude steel capacity of 35 million tonnes. It is one of the world's most geographically diversified steel producers, with operations and commercial presence spanning multiple regions worldwide.
https://en.wikipedia.org/wiki/Tata_Steel