Swan Energy Standalone December 2018 Net Sales at Rs 83.52 crore, down 14.22% Y-o-Yhttps://www.moneycontrol.com/news/business/earnings/swan-energy-standalone-december-2018-net-sales-at-rs-83-52-crore-down-14-22-y-o-y-3519731.html#SWANENERGY