Triangle Sign & Service, owned by Sinclair Broadcasting, a publicly traded company on the NYSE, has joined Vantage LEDs Partner Program to help grow Digital Signage locally in the Baltimore, MD area as well as nationally.   “We have seen substantial changes in the sign industry including computerized LEDs and advanced equipment. Triangle has always strived to be at the forefront of all new developments. “states Steve Altshuler, President of Triangle Sign & Service. When asked about their goals for the future, Mr. Altshuler state...