Sales of household appliances: Sales of power electronic components; Sales of electrical equipment; Mechanical and electrical equipment sales, sales of instrumentation; Sales of electronic products; Electronic measuring instruments sales, sales of electrical equipment equipment; Telecom equipment sales, materials of construction sales, daily necessities sales, wearable smart equipment sales; Lighting sales, photovoltaic equipment and components sales, industrial control system sales; Pump and vacuum equipment sales; Internet of Things equipment sales, wire and cable business, technical services, technology development, technical advice, technical exchanges, technology transfer, technology promotion, contract energy management, energy management services; Property management; Information consulting services (excluding licensing information consulting service); (The above sales are only for wholesale and online sales) (the above does not include investment consulting) (except for projects that are subject to approval according to law, they shall carry out business activities independently with their business licenses).