Second-tier brands. Shandong Kangyang Power Supply Co., Ltd. was founded in 2002 and covers an area of ??more than 560 acres. The company has strong technical force, domestic first-class technology and advanced production equipment. It is the earliest manufacturer in China to produce special batteries for electric vehicles. Kangyang Battery is the company Its products are second-tier brands. The first-tier brands in the electric vehicle industry include Tianneng and Chaowei, while the second-tier brands include Xupai, Nandu, Jingqiu, Jiuhui, Kangyang, etc.