Cemtrex Inc. marine ships and cruise lines for measurement of nitrogen oxide and smoke. ships. subsequently passed several subsidiary regulations. January 1, 2000," said Aron Govil, CEO & President of Cemtrex. Cemtrex is pursuing various projects with large fleets of cruise lines to implement the NOx and Smoke Monitors to comply with the code. Cemtrex's NOx analyzer works in extreme conditions expected in marine applications where excessive vibrations and saline atmosphere would adversely affect the performance of other conventional CEMS.