One of the plants of the Electric Motor Division produced thermostatic control units. The Laundry Equipment Division bought all its requirements for thermostatic control units (about 100,000 a year) from the Electric Motor Division. The Refrigeration Division used a similar unit, and until 1985 it had purchased all its requirements (20,000 a year) from an outside supplier, the Monson Controls Corporation. In 1985, at the request of the Electric Motor Division, the Refrigeration Division purchased 25 percent of its requirements from the Electric Motor Division. In 1986, this percentage was increased to 50 percent, and in 1987 to 75 percent. In July 1987, the Refrigeration Division informed the Monson Controls Corporation that beginning January 1, 1988, it would by all its thermostatic control units from the Electric Motor Division. The Refrigeration Division made these source changes as a result of Electric Motor Division requests, which were, it said, “in the best interest of the company”. The units made outside and inside were comparable in quality, and the price paid to the Electric Motor Division was the same as the price paid to the Monson Controls Corporation. The Laundry Division also paid this same price to the Electric Motor Division.