The business scope includes general business items: sales of high-definition digital audio and video distributors, converters and their accessories, connecting lines and connectors; automotive digital TVs, radio antennas, automotive parts, ID, IC smart cards, smart card reader equipment Technology research and development and sales; sales of smart surveillance cameras, face recognition all-in-one machines, fingerprint locks, fingerprint cards, and other security peripheral accessories; development and sales of electronic products; domestic trade; import and export of goods and technologies. (Except for projects prohibited by laws, administrative regulations, and decisions of the State Council, restricted projects can only be operated after obtaining permits)