Keystone Microtech Corporation announced earnings results for the first quarter ended March 31, 2019. For the first quarter, the company announced sales was TWD 192.649 million compared to TWD 168.121 million a year ago. Operating income was TWD 60.046 million compared to TWD 55.016 million a year ago. Net income was TWD 48.993 million compared to TWD 41.821 million a year ago. Basic earnings per share was TWD 1.99 compared to TWD 1.7 a year ago. Diluted earnings per share was TWD 1.97 compared to TWD 1.65 a year ago.