R&D, production, and sales of medical devices and equipment, including gasification equipment: Consultation on equipment design, technology transfer; Self-operated and agent import and export business of various commodities and technologies (excluding those restricted or prohibited by the state) (projects requiring approval according to law can only be carried out after approval by relevant departments). Licensed projects: Sales of disinfection equipment; Production of disinfection equipment (projects requiring approval according to law can only be carried out after approval by relevant departments, and specific business projects are subject to approval results). General projects: Manufacturing of special equipment for environmental protection; Sales of special equipment for environmental protection; Manufacturing of machinery and components for water resources; Sales of pneumatic power machinery and components; General machinery and equipment installation services; Professional cleaning and disinfection services (excluding projects requiring approval according to law, and businesses can be carried out independently according to law with a business license)