Katie series companies are:
Wuhan Kaidi Electric Power Co., Ltd. ("Kaidi Electric Power")
Wuhan Donghu High-tech Group Co., Ltd. (referred to as "Donghu High-tech")
Zhongying yangtze river international Investment Guarantee Co., Ltd. (hereinafter referred to as "Zhongying Changjiang")
Wuhan Kaidi Environmental Protection Co., Ltd. ("Kaidi Environmental Protection")
Wuhan Katie Electric Power Engineering Co., Ltd. ("Katie Project")
Wuhan Katie Engineering Technology Research Institute Co., Ltd. (hereinafter referred to as "Katie Research Institute")
Xuzhou Institute of Combustion Control ("Xuranyuan")
Wuhan Katie Blue Sky Technology Co., Ltd. ("Katie Blue Sky")
Wuhan Kaidi Green Energy Operation Co., Ltd. ("Kaidi Operation")
Wuhan Katie Sunshine Bio-energy Investment Co., Ltd. ("Katie Sunshine")
Wuhan Chang Kai Real Estate Development Co., Ltd. ("Katie Chang Kai")
Among them, "Katie Research Institute" is mainly composed of two national enterprise technology centers, a postdoctoral research center and a provincial enterprise technology research and development center. Seven Katie series companies were recognized as national high-tech enterprises.