Coretek Opto Corporation announced earnings results for the full year ended December 31, 2018. For the full year, the company announced sales was TWD 464.682 million compared to TWD 870.896 million a year ago. Operating loss was TWD 84.860 million compared to operating Income of TWD 30.594 million a year ago. Net loss was TWD 81.938 million compared to net income of TWD 4.599 million a year ago. Basic loss per share was TWD 1.24 compared to basic earnings per share of TWD 0.07 a year ago.