FAIRFIELD, Conn.--(BUSINESS WIRE)--Acme United Corporation (NYSE MKT:ACU), a leading worldwide supplier of cutting, measuring, and safety items, today announced it will participate in the following financial conferences: •   Rodman & Renshaw 17th Annual Global Investment Conference Date: Wednesday, September 9, 2015 Time: 3:25 PM ET Location: St. Regis Hotel, New York City Presenter: Walter C. Johnsen, Chairman and CEO   • B. Riley & Co. and Great American Group Consumer Conference Date