Reliance ramps up daily oxygen output to over 700 tonnes The company's Jamnagar refineries in Gujarat initially produced 100 tonnes of medical-grade oxygen, which has quickly been ramped up to over 700 tonnes, people aware of the matter said PTI | April 20, 2021 | Updated 20:14 IST Medical-grade oxygen is not a product that was produced at the Jamnagar refineries, which convert crude oil into products such as diesel, petrol and jet fuel Billionaire Mukesh Ambani's Reliance Industries Ltd has tweaked manufacturing at its Jamnagar oil refineries to produce over 700 tonnes a day of medical-grade oxygen which is being supplied free of cost to states badly affected by COVID-19, sources said.