In China, if the second-level qualification for general contracting of highway engineering construction is obtained, the project needs to be strictly reviewed and recognized by the enterprise. In this process, companies need to meet a series of conditions and submit detailed application materials. These materials need to show the company's financial status, performance, personnel qualifications and equipment to fully demonstrate its corresponding construction strength. Although the official does not directly charge the cost of purchasing qualifications, in the preparation process, enterprises will have certain expenses in hiring professionals and improving construction capabilities. In addition, in order to successfully pass the screening, it may be necessary to pay the evaluation fee and testing fee of a third-party organization. 
In addition, enterprises need to pay attention to the following points during the application process. First of all, it is necessary to ensure that the submitted application materials are true and accurate, once false materials are found, it will directly lead to the failure of the application. Secondly, it is necessary to understand and familiarize yourself with the application process and evaluation criteria in advance to improve the efficiency of the application. Finally, it is necessary to pay attention to communication and cooperation with third-party institutions to ensure the smooth progress of all work in the review process. 
After completing the above steps, enterprises need to wait patiently for the results of the review. Normally, the results of the review will be announced within a certain number of working days. If the enterprise successfully obtains the second-level qualification for general contracting of highway engineering construction, it will mean that its construction strength has been officially recognized and laid a solid foundation for future business development. At the same time, it will also further enhance the company's visibility and competitiveness in the industry. 
If you are interested in the specific conditions and procedures of the qualification application, or want to know the possible costs, it is recommended that you consult the relevant ** department or professional qualification application consulting service organization to get the most accurate guidance.