Cts is all about electronics. the company's two segments, electronics manufacturing services (ems, 58% of sales) and components and sensors (42%), provide products and manufacturing services to the aerospace, automotive, communications, computer, medical equipment, and military contracting industries, among others. products include automotive sensors, oscillators, quartz crystals, resistors, and switches. cts also makes radio-frequency modules for wireless phones, pointing sticks for notebook computer keyboards, and ceramics for use in global positioning system (gps) devices. customers have included hewlett-packard. more than half of the company's sales come from the us.