Beijing has the registered address of qingxi technology ltd., located at no. 1-a1174, on the street of the city of beijing, on the first road, on the first street of the city of beijing, with the registration authority being the market supervision authority of the city of beijing, represented by the legal person li he xing, and covering general items: technical services, technology development, technical advice, exchange, technology transfer, technology promotion; labour services (other than labour dispatch); sale of mechanical equipment; retail sale of hardware products; sale of refrigeration, air conditioning and household appliances; sale of construction materials; sale of metal materials; sale of chemical products (other than licensed chemical products); advertising; conference and exhibition services; import and export of goods; import and export agents; sale of special equipment; installation services for household appliances; repair of general equipment; installation services for general machinery. (in addition to projects subject to legal authorization, the activities are carried out autonomously and in accordance with the law, in accordance with the operating licence): construction works; subcontracting of construction services; refurbishment and repair of special equipment installation; installation and maintenance of gas combustion equipment. (a project subject to approval by law may only be carried out with the approval of the relevant department, depending on the documents or licences approved by the relevant department) (no activity shall be carried out in the category of projects prohibited and restricted by the state and municipal industrial policy