What is the relationship between Ningbo Port Authority and Zhoushan Port in Ningbo?

The predecessor of Zhoushan Port in Ningbo is Ningbo Port Authority. According to official website's information from Zhejiang Provincial Communications Department, the Ministry of Communications replied that Zhejiang Province agreed that the name "Ningbo-Zhoushan Port" would be approved by the Zhejiang Provincial Government in accordance with the provisions of the Port Law, and the names "Ningbo Port" and "Zhoushan Port" would no longer be used. The integration of Ningbo and Zhoushan Port has taken substantial steps.