Hughes Circuits is one of the largest fully integrated electronics manufacturing services (EMS) company in San Diego County. Based in San Marcos, Calif., the company specializes in various market segments, including military, medical, advanced materials, rigid flex, highly engineered prototype and low volume commercial products. It offers layout, fabrication and assembly services. Hughes Circuits' client base includes St. Jude Medical, Ball Aerospace, Edwards Lifesciences, Northrop Grumman, Honeywell and Rockwell Collins, to name a few. The company is AS9100:2004 and ISO9000:2008 certified and is also MIL-P-55110 Qualified.