Hubei Tianrui Electronics Co., Ltd. was founded in 1998. It is a high-tech enterprise integrating scientific research, production, sales and service of power electronic components. It focuses on the development of "relay protection and power automation" and continues to provide services to domestic and foreign customers. The power equipment manufacturer provides a complete set of precision transformer solutions and is a well-known manufacturer of transformers for relay protection. It was listed on the New OTC Market in May 2016 (Tianrui Electronics 837601.OC). As one of the professional scientific research institutions for precision transformers in China, Tianrui passed the "Hubei Provincial Recognized Enterprise Technology Center" approved by six ministries and commissions in 2013. So far, it has obtained 4 invention patents, 30 utility model patents, 5 Appearance patent. At the same time, Tianrui has also made great progress in external technical exchanges, including the Tianmen Electrical Instrumentation Research Institute co-built with the Provincial Bureau of Quality and Technical Supervision, the undergraduate internship base co-built with Huazhong University of Science and Technology, and the Provincial Science and Technology Association Scientific research cooperation such as the jointly built academician expert workstation and the innovative practice base jointly built with the Provincial Postdoctoral Management Committee have further consolidated Tianrui’s innovation soil and effectively guaranteed the technical level of the company’s products.