A Gainesville manufacturer that has outgrown its current site plans to develop a new headquarters, engineering, sales and production center. Rotating Engineered Products Inc. at 2405 Murphy Blvd. has plans for a 40,000-square-foot production facility on 10 acres in Gainesville Industrial Park West, 2419 West Park Drive, off Ga. 13/Atlanta Highway. "Our business success in Gainesville-Hall County is an attribute to our employees and our customers, but our ability to keep growing here is a credit to the partnership" with area government and business leaders, said Jim Hene, REP president and founder, in a press release issued this morning.