SigmaTron (SigmaTron International) 

SigmaTron International, Inc. operates as an independent provider of electronic manufacturing services (EMS). Its EMS services include printed circuit board assemblies and completely assembled (box-build) electronic products. The company also offers automatic and manual assembly and testing of products; material sourcing and procurement services; manufacturing and test engineering support services; design services; warehousing and distribution services; and assistance in obtaining product approval from governmental and other regulatory bodies. In addition, the company offers electronic and electromechanical manufacturing solutions. It primarily serves industrial electronics, consumer electronics, and medical/life sciences industries in the United States, Mexico, China, Vietnam, and Taiwan. The company markets its services through independent manufacturers' representative organizations. SigmaTron International, Inc. was incorporated in 1993 and is headquartered in Elk Grove Village, Illinois.