Newonder Special Electric Co., Ltd. researches, develops, produces, and sells frequency converter transformers, reactors, power transformers, and other transformers in China and internationally. Its products include frequency converter, power, small, marine, and oil-fired transformers for hydrogen energy applications; medium-frequency isolation DC transformers and medium-voltage high-frequency transformers; and dry-type and oil-immersed transformers, including variable frequency speed control. The company also offers low and high voltage reactors and energy storage products such as cast-in-place transformers, centralized and string energy storage converters, EMS, AC step-up integrated units, and industrial, commercial, and large-scale energy storage systems. It serves wind power, photovoltaic, energy storage, petroleum, chemical, metallurgy, coal, steel rolling, marine engineering, and data center fields. Formerly Beijing Xinhuadu Special Transformer Co., Ltd., it changed its name to Newonder Special Electric Co., Ltd. in May 2010. Founded in 1985, it is headquartered in Beijing, China.