Midland, Texas, July 30, 2018 - Natural Gas Services Group, Inc. (NYSE:NGS), a leading provider of gas compression equipment and services to the natural gas industry, announces the following conference call information for their second quarter 2018 earnings release: Earnings Release: Thursday, August 9, 2018 before market opens Public distribution will be through Nasdaq OMX and the Natural Gas Services Group, Inc. website at www.ngsgi.com . Conference Call: Thursday, August 9, 2018 at 10:00 a.m....