Professional Waste Technology (1999) Public Company Limited announced earnings results for the first quarter ended March 31, 2021. For the first quarter, the company announced total revenue was THB 59.979 million compared to THB 62.993 million a year ago. Operating income was THB 9.501 million compared to THB 1.451 million a year ago. Net income was THB 9.054 million compared to net loss of THB 1.907 million a year ago. Basic earnings per share from continuing operations was THB 0.0045 compared to basic loss per share from continuing operations of THB 0.0009 a year ago.