Petro U.S.A. Inc. announced earnings results for the second quarter ended December 31, 2018. For the second quarter, the company announced operating loss was USD 4,074. Net loss was USD 4,074. For the half year, operating loss was USD 10,074 compared to USD 27,292 a year ago. Net loss was USD 10,074 compared to USD 27,292 a year ago.