Jiashan Huarui Sunking Electrical Equipment Technology Co., Ltd. was established in 2004 as a wholly foreign-owned enterprise invested by SUN.KING Technology Group Co., Ltd. It is a high-tech enterprise that integrates research, development, design, manufacturing, and sales of anode saturable reactor products. The company is located in the center of the Yangtze River Delta Economic Zone - Zhejiang Jiashan Electronic Information Industry Park. The company has a total investment of 99 million US dollars, a registered capital of 76.5 million US dollars, and covers an area of 117 acres. Since its establishment, the company has benefited from the strong promotion of national high-voltage direct current transmission construction, and its business operations have continued to grow rapidly.

The company has won multiple national, provincial, municipal and other honorary awards, including the National High tech Enterprise Certification, Zhejiang Province's "Provincial High tech Enterprise Research and Development Center", "Green Factory" title, and "Jiaxing Enterprise Technology R&D Center" title. From 2008 to 2020, it has been awarded the title of "Top Ten Enterprises" in the development zone for twelve consecutive years. As of the end of 2023, a total of 57 patents have been obtained (50 utility model patents, 4 design patents, and 3 invention patents).

The company's independently developed anode saturable reactor products have supplied a total of 23478 anode saturable reactors to 35 high-voltage and ultra-high voltage direct current transmission projects by the end of 2023.