Is China xd Group a state-owned enterprise or a central enterprise?

China xd Group Co., Ltd. (hereinafter referred to as "china xd Group") is the only central enterprise in China that focuses on complete sets of power transmission and transformation industries. Founded in July of 1959, it is a large enterprise group integrating scientific research, development, manufacturing, trade and finance on the basis of four key construction projects of 156 during the First Five-Year Plan period.