Manufacturing of mining machinery, sales of mining machinery, manufacturing of agricultural machinery, sales of agricultural machinery, manufacturing of construction machinery, sales of construction machinery, research and development of mechanical equipment, processing of mechanical parts and components, sales of mechanical parts and components, repair of specialized equipment, maintenance of electronic and mechanical equipment (excluding special equipment), leasing of photovoltaic power generation equipment, leasing of machinery and equipment, information technology consulting services, general cargo warehousing services (excluding items requiring permits such as hazardous chemicals), import and export of goods, import and export of technologies, leasing of non-residential real estate, road cargo transportation of general freight vehicles with a total mass of 4.5 tons or less (excluding network freight and dangerous goods).