Tianzheng Electric has a certain business relationship with Bull Group. Bull Group is one of the important customers of Tianzheng Electric. Specifically, Bull Group and its subsidiary Ningbo Bull Electric Co., Ltd. are important customers of Tianzheng Electric. Bull Group mentioned in its prospectus that the OEM transactions between Bull Group and Tianzheng Electric were 43,548 in June 2065,438+08 and June 2065,438+09, respectively, in 400 yuan, 46,566,5438+0, 200 yuan, 60,954, 200 yuan and 546,654, 200 yuan. This means that Bull Group has purchased a large number of products from Tianzheng Electric.