The evaluated lowest bid price method is applicable to the project subject to tender with general technical and performance standards or the tenderee has no special requirements for its technology and permeability. On the premise of meeting the technical, quality, safety, environmental protection and other aspects stipulated in the tender documents, the bidder shall take the lowest quotation as the winning condition. This method is simple and feasible, but it is easy to be affected by malicious low-price bidding, which leads to the project quality can not be guaranteed.
Comprehensive evaluation method is to consider the comprehensive strength of bidders in technology, quality, safety, environmental protection, management and service, and determine the winning bidder. This method is more scientific and rigorous, and can fully consider the influence of various factors on project implementation, which is conducive to selecting the best contractor. However, this method needs to invest more human, material and financial resources, and the time cost is relatively high.
In addition, there are some other bid evaluation methods, such as weighted average method and random lottery method. The weighted average method is based on the weighted sum of the scores of bidders' indexes, and the final score ranking is obtained to determine the winning bidder; The rule of random selection is to determine the winning bidder by random selection. These methods have been applied in different engineering projects, but their application scope is limited.
To sum up, different bid evaluation methods have their own advantages and disadvantages, and it is necessary to choose the appropriate bid evaluation method according to the specific project situation. When selecting bid evaluation methods, we should pay attention to scientificity and rationality, fully consider the influence of various factors on project implementation, and ensure the selection of the best contractor.