Zen Technologies, a manufacture of training simulators, announced Friday the orders worth Rs 1.71 billion are pending with the company. Of the total, annual maintenance contracts (AMCs) accounts for Rs 827.4 million. It expects to execute orders worth Rs 850 million within next 2 to 3 quarters.

AMCs will be executed over a period of five years after the expiry of warranty period. Warranty period is typically, two years, the company said.

Shares of the company gained Rs 21.55, or 19.96%, to trade at Rs 129.50. The total volume of shares traded was 4,918 at the BSE (9.58 a.m., Friday).