NEC PORTUGAL-TELECOMUNICAÇOES E SISTEMAS, S.A. is a provider of products and services such as telephony - equipment and systems,aerials, radar, shipborne,aerials, radar, airborne,aerials, radar, air defence,cassette recorder-players, mono,cassette recorder-players, stereo,tape recorders, portable,tape recorders, battery operated,particle accelerators for high energy radiotherapy,electroencephalographs,lasers, medical applications,radiotherapy equipment.