 JOLIETTE, Quebec, July 12, 2021 GLOBE NEWSWIRE -- StrongMDI Screen Systems, Inc., a wholly owned subsidiary of Ballantyne Strong, Inc. NYSE American: BTN, and a leader in projection screen manufacturing and optical coating development for cinemas, commercial venues, and amusement parks worldwide StrongMDI announces that it has partnered with Illuminarium Experiences on the opening of their first location in Atlanta, Georgia. 