Eritsyan is also an active member of two other Nevada corporations, Goliath Management Group, Inc. and Petrolpros, Inc. Goliath Management Group, Inc., a Nevada and Arizona commercial contractor, constructs retail spaces, hotels, other commercial spaces, and horizontal additions. In Arizona, the corporation maintains a general dual license. Petrolpros, Inc., based in Las Vegas, Nevada, specializes in gas station maintenance and repairs. Immediate repair of hanging gear, breakaways, nozzles, dispenser parts, and preventative maintenance are among the services provided. The latter includes inspections, pump testing, and the installation of improved parts that keep stations up to date.