CHARLESTON, S.C., Sept. 18, 2015 /PRNewswire/ — Headquartered in downtown Charleston, red7 is a full-service agency delivering a high-impact measured marketing approach to global business-to-business and business-to-consumer clients including niche action and adventure sport brands. “To set these brand partners apart from their competitors, we build their business through continuous improvements. It’s winning market share for brands using a test-and-optimize …