There has been a change of leadership in the commercial and professional division of the Canadian Rona Group. Michael Storfer, vice president commercial and professional market and president of Nobel, a subsidiary company, has departed from the group. Rona acquired Nobel, a specialist plumbing firm founded by Storfer almost 20 years ago, in 2007. Jim Anderson, currently vice president of sales at Nobel, is taking over as general manager of the trade division and Nobel.