Shanghai blueware electronics ltd. Operates on general items: wholesale distribution of electronic metaware; retail distribution of electronic metaware; sale of mechanical and electrical equipment; sale of electrical appliances; sale of smart instrument instruments; sale of distribution switch control equipment; software development; sale of electronic products; sale of electrical metaware; sale of electronic devices and electromechanical components; sale of supply instrument meters; sale of electronic vacuum devices; import and export of goods; and sale of labour protection supplies。