South County business round up: Computer Guys of Orange County expands, Mazda dealership opens in San Juan Capistrano, more

CHAMBER to CELEBRATE COX SOLUTIONS STORE The Rancho Santa Margarita Chamber of Commerce will celebrate the grand opening of the Cox Solutions Store with a ribbon-cutting ceremony at 4 p.m. on Jan. 29. The store, at 30652 Santa Margarita Parkway,…