According to the provisions of the bidding law:
Article 3 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. ? "