Goods import and export, technology import and export, sales of class I medical devices, sales of class II medical devices, toy sales, sales of maternal and infant products, sales of daily necessities, sales of electronic products, sales of digital cultural creative technology equipment, sales of daily necessities, sales of household appliances, sales of mechanical equipment, sales of clocks and watches, sales of building materials, sales of sanitary wares Sales, clothing sales, stationery sales, cosmetics retail, hardware products wholesale, information consulting services, engaged in technology in the field of information technology.