According to Article 3 of the Bidding Law of People's Republic of China (PRC)
The following construction projects in People's Republic of China (PRC), including engineering survey, design, construction, supervision and procurement of important equipment and materials related to engineering construction, must be subject to tender:
(a) large-scale infrastructure, public utilities and other projects related to social interests and public safety;
(2) Projects that are wholly or partially invested with state-owned funds or financed by the state;
(3) Projects that use loans or aid funds from international organizations or foreign governments.
The specific scope and scale standards of the projects listed in the preceding paragraph shall be formulated by the development planning department of the State Council in conjunction with the relevant departments of the State Council and submitted to the State Council for approval.
Where the law or the State Council has provisions on the scope of other projects that must be subject to tender, such provisions shall prevail.
According to Article 7 of this standard on the scope and scale of bidding for engineering construction projects.
All kinds of engineering construction projects within the scope specified in Articles 2 to 6 of these Provisions, including engineering survey, design, construction, supervision and procurement of important equipment and materials related to engineering construction, must be subject to tender if they meet one of the following standards:
(a) the estimated price of a single construction contract is more than 2 million yuan;
(two) the procurement of important equipment, materials and other goods, the estimated price of a single contract is more than 6,543,800 yuan;
(three) the estimated price of a single contract for the procurement of services such as survey, design and supervision is more than 500,000 yuan;
(four) the estimated price of a single contract is lower than the standards stipulated in items (1), (2) and (3), but the total investment of the project is more than 30 million yuan.
According to Article 12 of the Measures for Tendering and Bidding of Construction Projects
In any of the following circumstances, the construction project that must be subject to construction bidding according to law may not be subject to construction bidding:
(a) involving national security, state secrets, emergency rescue and disaster relief, or the use of migrant workers because of special circumstances such as the use of poverty alleviation funds to implement work-for-relief, which is not suitable for bidding;
(two) the main construction technology adopts irreplaceable patents or proprietary technologies;
(3) Investors in franchise projects selected through bidding can build their own projects according to law;
(4) Buyers can build their own houses according to law;
(five) the original winning bidder still has the ability to contract the additional minor projects or main storey-adding projects in the construction process, and others bear the requirements that will affect the construction or functional support;
(six) other circumstances stipulated by the state.