Interior decoration and renovation of residential buildings; Construction of intelligent building projects; Design of intelligent building systems, subcontracting of construction labor (Projects that be approved according to law, business activities can be carried out only after approval by relevant departments, and specific business items shall be subject to the approval results) General items: Foreign contracted; Landscaping project construction; Home appliance sales: Sales of household appliances, sales of smart home consumer devices, furniture sales; Internet of Things technology services; Sales of household spare parts; Household appliance installation services; Sales of security equipment; Professional design services; Sales of electronic products