General projects: Technical services, technology development, technical consultation, technical exchange, technology transfer, technology promotion; Engineering and technical research and experimental development; Category II medical device sales; Sales of sanitary supplies and disposable medical supplies; Disinfectant sales (excluding hazardous chemicals); Medical mask retail; Production of daily masks (non-medical use); Sales of daily face masks (non-medical use); Medical mask wholesale; Wholesale of protective equipment for medical personnel; Retail sales of protective equipment for medical personnel; Sales of finished industrial textile and manufactured products; Production of category I medical devices; Category I medical device sales; Sales of experimental analysis instruments; Manufacturing of experimental analysis instruments; Daily necessities sales; Commodity wholesale; Sales of personal hygiene supplies; Domestic trade agent; Biomass liquid fuel production process research and development; Research and development of bio-based materials technology (except for the projects that must be approved according to law, To independently carry out business activities according to law by presenting the business license). Licensed items: Import and export of goods; Import and export of technology; Import and export agency; Production of sanitary products and disposable medical supplies; Production of disinfectants (excluding hazardous chemicals) (for projects approved according to law, business activities can be carried out only after the approval of relevant departments, and the specific business items shall be subject to the approval results).