General business items: import and export business; development, integration, sales, and technical services of electric vehicle charging and swapping equipment verification devices, electronic electrical measurement equipment, and related integrated hardware and software systems. Development, design, and sales of temperature sensors, temperature measuring instruments and detection devices, access control equipment and systems, access control software and system integration, network technology and products. Leasing, sales, and services of automobiles, special vehicles, and charging pile inspection vehicles. (The above projects are prohibited except those prohibited by national laws, administrative regulations, and State Council decisions; restricted projects require permission before operation); non-residential real estate leasing; leasing services (excluding licensed leasing services). Licensed business items: development, design, system integration, production, sales, installation, testing services, and technical services of instruments and other general meters, power measurement inspection devices, power measurement verification devices, electronic measuring instruments, sensors and detection alarm instruments, combustible gas alarm equipment, security monitoring systems, automation equipment, and electrical measurement software; production of temperature sensors, temperature measuring instruments and detection devices, access control equipment and systems, access control software and system integration, and network technology and products.