Aohai (stock code 002993) is a national high-tech enterprise with application-side energy exchange, efficient charging and storage, and centralized supply. It has five manufacturing bases in Dongguan, Jiangxi, Wuhan, India and Indonesia, and its products are used in many fields such as intelligent terminals, data energy, power energy, network energy, and new energy vehicles. In 2021, the sales volume of chargers exceeded 300 million, ranking the top three in the world. Aohai adheres to the strategic positioning of "technology-based enterprise". It now has two national CNAS certification laboratories, attach great importance to technical reserves, has a research and development team of more than 600 people, and has obtained more than 500 patents, covering motor control, battery management, vehicle control, automotive power supply, high-power charging, PD charging, Wireless charging, PD energy storage power supply, anti-mode interference, plate transformer and other technologies, as well as 26 software copyrights. It is a doctoral workstation in Guangdong Province, an intelligent terminal charging and storage engineering technology research center in Guangdong Province, and has established industry-university-research cooperation with Zhejiang University and other scientific research institutions.