Bouwens Corporation manufactures a solvent used in airplane maintenance

shops. Bouwens sells the solvent to both U.S. military services and commercial airlines. The solvent is produced in a single plant in one of two buildings. Although the solvent sold to the military is chemically identical to that sold to the airlines, the company produces solvent for the two customer types in different buildings at the plant. The solvent sold to the military is manufactured in building 155 (B-155) and is labeled M-Solv. The solvent sold to the commercial airlines is manufactured in building 159 (B-159) and is labeled C-Solv.