What is the relationship between CNNC and CNNC Huachen?

CNNC huachen belongs to CNNC. According to the query of CNNC and CNNC Huachen official website, CNNC Huachen Engineering Management Co., Ltd. is a member unit of CNNC and a key pilot unit of national nuclear construction reform. CNNC huachen is affiliated to CNNC research institute, and its treatment follows CNNC. CNNC and CNNC Huachen have made historic contributions to China with two bombs and one boat. Since the new era, the company has undertaken a large number of national key projects and made new achievements in national defense, national economy and social development.