Founded in 1890 by Mr. Jesse S. Keys, Keystone Folding Box is a privately-owned company located in the Afton section of Madison, N.J. The company moved to Newark, N.J. in 1910 and later, in 1923, built a factory at its current location. Keystone manufactures and designs paperboard packaging consisting of folding boxes, blister cards, heat-seal blister cards as well as specialty envelopes and counter displays. The company is also a design center and source for non-paperboard packaging components. Its quality control is based on programs established by the International Standard Organization as well as incorporating rules of the United States Food and Drug Administration.