Dogusan Boru Sanayii ve Ticaret A.S. Announced earnings results for the first quarter ended March 31, 2019. For the first quarter, the company announced sales was TRY 494,102 compared to TRY 698,544 a year ago. Operating loss was TRY 863,366 compared to TRY 207,999 a year ago. Net loss was TRY 1.087 million compared to TRY 335,844 a year ago.