$CETX Total Revenue for the three months ended March 31, 2019 and 2018 was $23,607,497 and $20,413,296, respectively, an increase of $3,194,201, or 16%. Total revenue in the second quarter increased, as compared to total revenue in the same period last year, primarily due to new revenues in the Advanced Technologies Segment, which had no revenues during the same period last year.