Did you mean: TELECOMMUNICATION EQUIPMENT AND SUPPLIES DESIGN AND CONSTRUCTION, ELECTRONIC CIRCUIT DESIGN, RADIO CIRCUITS DESIGN AND CONSTRICTION, TELEVISION CIRCUITS DESIGN AND CONSTRUCTION, TELEPHONE EQUIPMENT AND SUPPLIES DESIGN AND CONSTRUCTION Telecommunication Equipment and supplies Telecommunication systems Equipment and supplies TIMING CIRCUITS,SYNCHRONIZATION, TELECOMMUNICATION SYSTEMS-EQUIPMENT AND SUPPLIES,DIGITAL ELECTRONIC CLOCKS,PHASE-LOCKED LOOPS COMPUTER INTERFACES-STANDARDS MODEMS TELECOMMUNICATION-EQUIPMENTS AND SUPPLIES TELECOMMUNICATION EQUIPMENT AND SUPPLIES SEMICONDUCTORS INTEGRATED CIRCUIT VERY LARGE SCALE INTEGRATION ELECTRONIC CIRCUIT DESIGN TELECOMMUNICATION-EQUIPMENT AND SUPPLIES RADIO CIRCUITS