Radiant Opto-Electronics Corporation announced earnings results for the first quarter ended March 31, 2021. For the first quarter, the company announced sales was TWD 14,067.585 million compared to TWD 8,567.843 million a year ago. Operating income was TWD 1,733.624 million compared to TWD 539.305 million a year ago. Net income was TWD 1,666.325 million compared to TWD 715.115 million a year ago. Basic earnings per share from continuing operations was TWD 3.58 compared to TWD 1.54 a year ago. Diluted earnings per share from continuing operations was TWD 3.55 compared to TWD 1.51 a year ago.