Implementation of Upgrading and expansion project of National Highway No. 21 section from Son Tay to Xuan Mai (BOT project)
In the morning of 6 Sep 2014, TECICO and Hanoi Transport Department had a site investigation trip for preparing of Upgrading and expansion project of National Highway No. 21 section from Son Tay to Xuan Mai.
A site investigation trip at NH21 of TECICO and Hanoi Transport Department