General projects: medical research and experimental development; production of class I medical devices; sales of class I medical devices; sales of category II medical devices; manufacturing of optical instruments; sales of optical instruments; manufacturing of basic chemical raw materials; sales of special chemical products; technical services, technical development, technical consultation, technical exchange, technology transfer, technology promotion; software development; sales of daily necessities Sales; drug testing equipment sales; electronic special materials research and development. License items: import and export of goods; import and export of technology; production of class II medical devices; production of class III medical devices; operation of category III medical devices; inspection and testing services.