Coretek Opto Corporation announced earnings results for the full year ended December 31, 2019. For the full year, the company announced sales was TWD 369.631 million compared to TWD 464.682 million a year ago. Operating loss was TWD 99.867 million compared to TWD 84.860 million a year ago. Net loss was TWD 164.134 million compared to TWD 81.938 million a year ago. Basic loss per share was TWD 2.48 compared to TWD 1.24 a year ago.