According to Aiqi's investigation, Hangdingcheng Electronics is an assembly line, and its business scope includes the assembly and packaging of mechanical and electrical accessories, motor accessories, electronic products, communication equipment, mechanical and electrical equipment, household appliances, electronic components and first-class medical device accessories (it can only be operated after reporting to the environmental protection department); Technology development and technical services: electronic technology; Wholesale and retail: mechanical and electrical accessories, electronic products, communication equipment (except national special control), household appliances, electronic components, first-class medical device accessories, mechanical and electrical equipment; Import and export of goods and technologies (except for projects prohibited by laws and administrative regulations, projects restricted by laws and administrative regulations can only be operated after obtaining permission).