R&D, production, and sales of special equipment for the electronic industry; production and sales of wire harnesses and cables; sales of electronic products, metal materials, plastic products, instruments, Wujinjiaodian, wires and cables, auto parts, motorcycle parts, and electric vehicle parts; software development; maintenance and technical services of special equipment for the electronic industry; self-operated and agent import and export business of various commodities and technologies (except for commodities and technologies that are restricted by the state or prohibited from import and export). Production of Class III medical devices; production of Class II medical devices; production of daily masks (non-medical); sales of daily masks (non-medical); production of labor protection products; sales of labor protection products