New Company information at Railway Technology New and updated information from companies www.railway-technology.com http://www.railway-technology.com/ en-us http://www.railway-technology.com/ New Company information at Railway Technology http://www.railway-technology.com/content/images/logo_big.gif Sigma-Rolling Stock Air-Conditioning Systems http://www.railway-technology.com/contractors/hvac/air/ http://www.railway-technology.com/contractors/hvac/air/ <img src='http://www.railway-technology.com/contractor_images/6432/logo.jpg' alt=''/><p>Sigma Air Conditioning manufactures purpose-built air-conditioning systems to optimal passenger comfort for locomotives and mass transit vehicles worldwide.</p><h2>Climate control systems for the railway industry</h2><p>Sigma Air Conditioning prov… Wed, 31 Aug 2016 15:06:00 GMT