Stalwart Systems Adds GE?OS to Distribution October 18, 2013July 6, 2012 E?OS Surfaces added Stalwart Systems to its Ge?os distributors. Stalwart Systems is located in Niles, Ill. Stalwart’s territories include Illinois, Wisconsin, Indiana, Missouri and Michigan. Share this:ShareTwitterLinkedInFacebookEmailPinterestLike this:Like Loading...