LAKE SUCCESS, New York, July 10, 2002... Park Electrochemical Corp. (NYSE - PKE) announced that it had received Notice of Authorization from UL for the manufacture of mixed packages using N4000-13 core and FR-4 prepreg and Notice of Authorization for mixed packages using N6000 core and FR-4 prepreg.

Both mixed package options will allow designers and engineers to develop enhanced PCB builds and to improve process capabilities. In some cases, the mixed package approach can lower the material cost for designs that include mixed materials.

The N4000-13 digital broadband product is primarily used for sophisticated high-speed, low-loss, high bandwidth electronic infrastructure applications, especially in the telecommunications, networking and internet industries.

The N6000 system is designed for next generation signal integrity (SI™) applications such as low loss backplane technology, wide bandwidth network servers and workstations, advanced optoelectronic assemblies and cellular interconnects.

The N4000-13 and the N6000 systems are designed to be robust for high speed digital applications in the 1 - 10+ GHz range and are available in both prepregs and laminates, including ultra thin dielectrics. These materials are also available with SI™ technology for very high frequency applications.

Park Electrochemical Corp. is a leading global designer and producer of electronic materials used to fabricate complex multilayer printed circuit boards and interconnection systems. Park specializes in advanced materials for high layer count circuit boards and high speed digital broadband telecommunications, internet and networking applications. Park's electronic materials business operates through fully integrated business units in Asia, Europe and North America. The Company's manufacturing facilities are located in Singapore, China, Germany, France, England, Connecticut, New York, Arizona and California. Park's electronic materials business operates under the "Nelco" name.

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