The China Railway Corporation and China North Industries Corporation (CR-NORINCO) and Punjab Masstransit Authority (PMA) signed contract on April 22, 2015 to develop 27 KM long main line of Lahore orange line project of worth $ 1626 million. The Export-Import (Exim) Bank of China provided finance for this project. CR-NORINCO has tried to provide better working and living conditions for local staff at site. The project completed and inaugurated on October 25, 2020.
Source
http://cpec.gov.pk/project-details/46
https://www.mfa.gov.cn/ce/cepk/eng/zbgx/CPEC/t1627113.htm
https://www.geo.tv/latest/315093-all-you-need-to-know-about-lahores-orange-line-metro-train-project