CNOOC Sunshine Property Management Co., Ltd. is a wholly-owned subsidiary of China National Petroleum Corporation (CNPC), a subsidiary of PetroChina, and the third estate generally refers to companies operated under a state-owned enterprise that are not the company's main business, so CNPC Sunshine Property is a third estate.

CNOOC Sunshine Property Management Co., Ltd. was established on December 14, 2007, the registered office is located in Beijing Dongcheng District, Dongzhimen North Street, No. 9, China National Petroleum Corporation Building D, 0411, 0412, 0415, the legal representative of the legal representative of Ren Aijun. The scope of business includes property management; catering management; conference services; housing repair; equipment leasing; landscaping services; decorative design; home decoration; cleaning services; ceremonial services; installation of refrigeration equipment, plumbing and heating equipment, installation and maintenance of electrical appliances; the sale of electrical fittings, construction materials, general merchandise, fresh fruits, fresh vegetables, fresh meat, fresh eggs, aquatic products, fresh flowers