The additional amount of work exceeds 10%, and no re-tendering is required.
According to the Law of the People's Republic of China on Bidding and Tendering:
Article 25 The bidder is a legal person or other organization that responds to the bidding and participates in the bidding competition.
If individuals are allowed to participate in bidding for scientific research projects tendered in accordance with the law, the individuals bidding for the project shall be subject to the provisions of this Law on bidders.
Article 26 The bidder shall have the ability to undertake the bidding project; if the relevant provisions of the state have stipulated the qualification conditions for the bidder or the bidding documents have stipulated the qualification conditions for the bidder, the bidder shall have the stipulated qualification conditions.
Article 27 The bidder shall prepare the bidding documents in accordance with the requirements of the bidding documents. Bidding documents shall respond to the substantive requirements and conditions set forth in the bidding documents.
The bidding project belongs to the construction of the construction, the bidding documents shall include the proposed project manager and the main technical personnel resume, performance and to be used for the completion of the bidding project machinery and equipment.
Article 28 The bidder shall deliver the bidding documents to the place of bidding before the deadline for submitting the bidding documents as required by the bidding documents. Upon receipt of the bidding documents, the bidder shall sign and keep them and shall not open them. If there are less than three bidders, the bidder shall re-tender in accordance with this Law.
The bidder shall refuse to accept the bidding documents delivered after the deadline for submission of the bidding documents.
Article 29 bidders in the bidding documents required to submit tender documents before the deadline, may supplement, modify or withdraw the submitted tender documents, and notify the bidder in writing. Supplementary, modified content for the tender documents.
Article 30 The bidder, in accordance with the actual situation of the project as set out in the bidding documents, intends to subcontract part of the non-main and non-critical work of the awarded project after winning the tender, shall set out in the bidding documents.
Expanded Information:
According to the "Regulations on the Implementation of the Law on Bidding and Tendering of the People's Republic of China*** and the People's Republic of China":
Article 51 If one of the following circumstances exists, the bid evaluation committee shall reject its bid:
(1) the bidding documents are not sealed by the bidding unit and signed by the person in charge of the unit;
(2) the bidding consortium does not submit ***same bidding agreement;
(3) the bidder does not meet the qualification conditions stipulated by the State or the bidding documents;
(4) the same bidder submits more than two different bidding documents or bidding (v) the same bidder submits two or more different bidding documents or bidding offers, except where the bidding documents require the submission of alternative bids;
(v) the bidding offer is lower than the cost or higher than the maximum bidding limit set in the bidding documents;
(vi) the bidding documents fail to respond to the substantive requirements and conditions of the bidding documents;
(vii) the bidder has committed any unlawful act such as collusive bidding, falsification, bribery, etc.
VII.
Article 52 If there is any unclear content, obvious textual or computational errors in the bidding documents, and the bid evaluation committee considers it necessary for the bidders to make necessary clarifications or explanations, it shall notify the bidders in writing. The clarification of the bidder shall be in writing, and shall not exceed the scope of the tender documents or change the substantive content of the tender documents.
The evaluation committee shall not imply or induce the bidder to make clarification, clarification, shall not accept the bidder's initiative to clarify, clarification.
Article 53 Upon completion of the evaluation of tenders, the bid evaluation committee shall submit to the bidder a written report on the evaluation of tenders and the list of successful candidates. The winning candidate shall be no more than three, and marked with the order of ranking.
The bid evaluation report shall be signed by all members of the bid evaluation committee. Tender evaluation results of the evaluation committee members shall have different opinions in writing to explain their different opinions and reasons, tender evaluation report shall indicate the different opinions. Tender evaluation committee members refused to sign the tender evaluation report and does not explain in writing their dissenting views and reasons, deemed to agree with the results of the tender evaluation.
Article 54 of the project must be carried out in accordance with the law, the bidder shall, within three days from the date of receipt of the bid evaluation report shall publicize the winning candidate, the publicity period shall not be less than three days.
Bidders or other interested parties who have objections to the results of bid evaluation for projects that must be put up for bidding in accordance with law shall raise their objections during the period of publicizing the successful candidates. The bidder shall make a reply within three days from the date of receipt of the objection; before making the reply, the bidding and tendering activities shall be suspended.
Article 55 For projects in which state-owned funds are in a controlling or dominant position and which are required by law to conduct bidding, the bidder shall determine the first-ranked winning candidate to be the winning bidder.
The first-ranked winning candidate abandons the winning bid, is unable to fulfill the contract due to force majeure, fails to submit a performance bond in accordance with the requirements of the bidding documents, or is found to be in violation of law affecting the outcome of the winning bid.
If the conditions for winning the tender are not met, the bidder may determine the other winning candidates as the winning bidder in order of the order of the list of winning candidates proposed by the bid evaluation committee, or may re-tender.
Baidu Encyclopedia - Law of the People's Republic of China on Bidding and Tendering