Zimmer Industries, 750 Commerce Rd, Linden, NJ 07036, US

Founded in 1968 as a storefront operation in Union City, N.J., National Steel Rule is one of the leading manufacturers of rotary and flat die rules in the world. The company maintains an inventory of more than 20,000 different items for various applications. It offers a range of rotary, serrated, perforating and creasing rules. National Steel Rule s kushion crease is designed to reduce fractured scores caused by diecutting dry and recycled boards. The company s punches cut through several board grades, including double wall, wet board and corrugator. Located in Linden, N.J., it utilizes back notching and reverse curving processes. National Steel Rule s products are available with Teflon coating.