Bulgaria has invited Indian companies to invest in its various sectors such as pharmaceuticals, tourism, agriculture and food processing.Speaking at a function in New Delhi on Monday, Bulgarian Minister of Economy, Energy and Tourism Delian Dobrev said there is a huge potential for Indian investors in sectors like auto components, pharmaceuticals, agriculture and food processing, electronics and tourism.Talking about the bilateral trade between India and Bulgaria, he said, there is a lot of potential which needs to be tapped.