HEI, Inc. is a full service developer and manufacturer of high performance components, medical & industrial products and software. ISO certified and FDA registered, we produce micro-circuits and sub-systems for hearing, communications, high-speed data processing and medical applications. HEI's products include: Class I, II and III medical devices, bio-technology, drug discovery & in-vitro diagnostic systems, medical software & healthcare information technology and identification technologies for both healthcare & industry.