1. In PPP projects, the project company has the right to choose the supervision unit: in the practice of PPP projects, social capital is usually not directly used as the implementation subject of PPP projects, but a project company will be established specifically for the project. The project company is an independent legal person established in accordance with the law, which operates independently and is responsible for its own profits and losses. As the signing subject of PPP project contract and other related contracts, responsible for the specific implementation of the project. The project company can be established by social capital, or by the government and social capital. However, the government's shareholding in the project company should be less than 50%, and there is no actual control and management right. The project company is responsible for the construction and operation management of specific projects, including financing, construction and operation. The project company is the main body of PPP project management and risk taking, and the owner of PPP project, and has the right to entrust the supervision unit to perform the supervision task.
2. In PPP projects, the government has the right to choose the supervision unit: generally, the project company is responsible for the project construction, operation, maintenance and handover, and is the owner of PPP projects, and has the right to choose the project supervision unit. PPP project is the cooperation between government and social capital. The two sides are equal subjects, establish mutually beneficial cooperative relations on the basis of market mechanism, and stipulate and guarantee rights and obligations through contract terms. In PPP projects, the government has two roles. One is that the government, as the purchaser of public goods or services, forms an equal civil subject relationship with the project company based on the PPP project contract, and exercises rights and performs obligations according to the agreement in the PPP project contract. The other is that as a manager of public affairs, he has the obligation to provide the public with high-quality and reasonably priced public products and services, and undertake the planning, procurement and commitment of PPP projects. Therefore, in order to better understand the progress of the PPP project and ensure that the project can be performed according to the contract, the government can plan and manage the implementation of the PPP project, and it is stipulated in the PPP contract that the government should choose the supervision unit according to law. And before the establishment of the project company, the owner of PPP project is the government, and the government, as the main body of PPP project implementation, has the right to choose the supervision unit.