Grand Rapids Business Journal Courtesy Dienetics The owner of a Jenison-based manufacturer sold the company to an out-of-state buyer. Bruce Krouskop, president of Jenison-based Dienetics Inc., sold his business to Rockford, Illinois-based Excelsior Inc., according to NuVescor Group. NuVescor, a mergers and acquisitions service provider based in Hudsonville, advised Dienetics in the transaction. Terms of the deal, which was completed earlier this spring, were not disclosed. “We are excited about adding Dienetics to our manufacturing group,” said Mike Abrahams, president and owner of Excelsior. “The company and its employees bring an excellent history and deep knowledge within the automotive, medical and other industry segments that we intend to continue and build upon.”