20 Years Of Electronics Products Turnkey OEM/ODM, Electronics Contract Manufacturing and Pcb Assembly Services -- China Topscom(shenzhen) Topscom is a leading Electronics Manufacturing Services (EMS) provider focused on delivering innovative design and manufacturing services to automotive, industrial, medical, consumer, telecom, and technology companies. With fiscal year 2013 revenues of USD$360 Million, Topscom helps customers design, build, ship, and service electronics products which provides customers with complete design, engineering, and manufacturing resources that are vertically integrated with components to optimize their operations by lowering their costs and reducing their time to markets.