HGS (India) Limited, (HGSI) (erstwhile Geosource India Limited) a part of the Sowar group, was established in 1986 in technical and financial collaboration with Geosource Inc USA, owner of Sensor Nederland b.v. To manufacture geophone, geophones, geophone strings, seismic cables & connectors. When Geosource Inc was bought out by HGS Inc USA, Geosource India Limited changed its name to HGS (India) Ltd.