Development and sales of computer software, medical electronic instruments and software (excluding restricted items), software embedded in information systems and equipment, support software, application software, embedded software, information security software, computer (application) systems, industrial software and other software; Database service and database management; Wholesale and sales of Class I medical supplies and equipment, communication products and electronic digital products; Provide logistics management services for the hospital (excluding medical behaviors); Machinery and equipment leasing (excluding financial leasing business); Investment and establishment of industries (specific projects will be reported separately); Enterprise management consulting; Investment consulting; Economic information consultation; Medical equipment maintenance; Domestic trade (excluding monopolized, controlled and monopolized commodities); Import and export of goods and technology;