CONSTRUCTORA SEFA SOCIEDAD ANONIMA.

Information from QuienEsQuien.wiki can be reused without asking for permission, as long as you cite us as the source and use the CC-BY-SA license for your publications.

If you cannot comply with these requirements, please contact us and tell us about your project.

The information gathered on QuiénEsQuién.Wiki comes from public and official sources, such as Compranet and the BMV. If you find that it is inaccurate or contains errors, those are errors in the original sources.

If the information presented about {title} is not correct, please contact us reporting the incorrect information and where we can obtain the correct information. We offer to accompany you in filing a claim with the corresponding entities.

Unfortunately it is very common for companies and people not to fulfill their commitments when providing goods or services. In case of non-compliance in Mexico you can go to Profeco and file a complaint or report as appropriate. If you are the victim of cyber fraud, we invite you to read this guide from the Campaña Nacional Antifraude Cibernético.

If you are the victim of extortion, take screenshots of the messages you received and go to the public prosecutor's office to request protection, or call 088 for guidance on filing the corresponding report. Recommendations for reporting phone extortion. If the extortionists have explicitly mentioned QuienEsQuien.wiki in their messages, please send us a copy of the messages.

If you want to request quotes, offer your services, file claims against companies or contact people, we recommend looking for their official website or using another means of contact. QuienEsQuien.wiki is not an advertising site and has no contact with the companies and people mentioned on the site.

Choose the system where you want to use the data to see the instructions. For research methodology, see the Manual for investigating open contracting.