AMI DODUCO Named Preferred Supplier by Modine.

EXPORT, Pa.--(BUSINESS WIRE)--Nov. 5, 1999--

AMI DODUCO's Reidsville, N.C. operation has been awarded Preferred Supplier status at Modine Manufacturing Company, a leading worldwide supplier of heat transfer and heat storage products to the automotive industry.

AMI DODUCO supplies Modine with copper-clad stainless steel for engine oil coolers used in cars, trucks, and off-road equipment. Preferred Supplier status is based on a complete quality assessment in which AMI DODUCO earned a score of over 98%.

"Modine's high-quality standards have made them a leading tier-one automotive supplier," said Robert H. Fisher, AMI DODUCO's Chief Operating Officer. "We are honored by this recognition and will continue our efforts to achieve even higher quality levels."

AMI DODUCO's other 1999 honors for quality and performance include recognition from units of Siemens AG, Alstom, S.A., and American Matsushita Electronics Company.

Headquartered in Export, Pennsylvania, AMI DODUCO, a Technitrol Company (NYSE: TNL) is a global leader in electrical contacts.

The company supplies contacts and assemblies, contact materials, thermostatic and laminated metal products, electroplating and surface treatment services, and precious metal refining and recycling to more than 3,000 customers. AMI DODUCO operates from 11 locations worldwide. Its Web site is http://www.amidoduco.com.