DMR Engineering (BOM:543410) received a work order worth 18 million Indian rupees from Wangchhu Hydroelectric Power, Bhutan, according to an Indian bourse filing on Monday.
Shares of the company plunged nearly 20% in Tuesday's trade.
The order is for consulting services related to the design and engineering of a diversion tunnel and allied works for a 570 MW hydropower project, the filing said.
The contract is to be completed in eight months, it said.