Vitro, S.A.B. De C.V. Announced earnings results for the first quarter ended March 31, 2021. For the first quarter, the company announced sales was USD 474 million compared to USD 500 million a year ago. Operating income was USD 6 million compared to USD 62 million a year ago. Net loss was USD 0.3 million compared to net income of USD 133 million a year ago.