Jyothy Labs Standalone December 2018 Net Sales at Rs 434.33 crore, up 3.81% Y-o-Yhttps://www.moneycontrol.com/news/business/earnings/jyothy-labs-standalone-december-2018-net-sales-at-rs-434-33-crore-up-3-81-y-o-y-3430501.html#JYOTHYLAB