Professional Waste Technology (1999) Public Company Limited reported earnings results for the first quarter ended March 31, 2022. For the first quarter, the company reported sales was THB 38.15 million compared to THB 20.82 million a year ago. Revenue was THB 96.8 million compared to THB 59.98 million a year ago. Net income was THB 38.17 million compared to THB 9.05 million a year ago. Basic earnings per share from continuing operations was THB 0.0188 compared to THB 0.0045 a year ago.