- P.O. Box 1464 425 S. Bowen - Service Center Longmont, CO 80501 (303) 772-2787 Denver Metro (303) 447-9131 Fax (303) 776-1270 trafsig@concentric.net Professional Products and Professional Services for Professional People Our objective is to provide the basic ingredient of timely customer service and contemporary engineering techniques with prompt product delivery, careful follow-up and ...www.trafsig.com