Processing and manufacturing of transformers, reactors, combined transformers, special transformers and various accessories, components, parts; repair of reactors, switch control equipment, transformers; sales of mechanical equipment, Wujinjiaodian, household appliances, computers, software and auxiliary equipment, electronic products; import and export of goods; import and export of technology; technology development; technical services; computer technology training; computer graphics and text design; corporate image planning; conference services; economic and trade consulting.