The contract must be signed or sealed by the signatory.

If the undertaker is a government department, it needs to be stamped with the government seal and audited by the person in charge of the unit.

A contract is an agreement between civil subjects to establish, change and terminate a civil legal relationship.

Contracts established according to law are protected by law. A legally established contract is legally binding only on the parties, except as otherwise provided by law.

"Government investment projects" are also called "public finance investment projects" or "national construction projects". Broadly speaking, the so-called "public financial investment project" is a project in which "the government invests some concentrated financial funds in all aspects of the social reproduction process in order to realize its functions"; In a narrow sense, it is a project that "the government invests the minimum amount in the reproduction of fixed assets and working capital to ensure the smooth progress of social reproduction". "Public * * * financial investment projects", commonly known as "financial capital investment projects", refers to projects that are approved by government functional departments and invested or partially invested by various financial capital construction funds. Financial capital construction funds include:

First, the capital construction funds in the financial budget;

Other expenditures in the budget of capital construction projects;

Three, the capital construction project funds included in the budget management;

Four, the budget funds for capital construction projects;

Five, other financial capital construction funds. The so-called "national construction projects" refer to "capital construction projects and technological transformation projects with state-owned assets as the main body of investment or financing (that is, holding or leading position)."

Article 490 of the Civil Code of People's Republic of China (PRC): If the parties conclude a contract in the form of a contract, the contract is concluded when the parties sign, seal or fingerprint it. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it.

A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.