Government has tightened the norms for importing crude soy and Sunflower oils at nil import duty. On May 24, the government had allowed annual import of 2 million tonnes of two edible oils for the next two year at nil duty. These imports ere allowed only for oil processors based on their refining capacity. The government has now asked importers to supporters to submit details of turnover for processing of crude edible oils in the last three years. They will also have to submit GST returns, earlier only processing capacity was sought.