Opto Circuits Consolidated December 2018 Net Sales at Rs 66.41 crore, up 13.18% Y-o-Yhttps://www.moneycontrol.com/news/business/earnings/opto-circuits-consolidated-december-2018-net-sales-at-rs-66-41-crore-up-13-18-y-o-y-3522601.html#OPTOCIRCUI