Hangzhou Ring Expressway is a ring expressway located in Hangzhou, Zhejiang Province. The national expressway network number is G2501. The expressway was completed on December 28, 2003, with a design speed of 100 to 120 kilometers per hour.

       From 2018 to 2020, our company has supplied prestressed carbon fiber panels to the high-speed bridges for several times to complete the structural reinforcement of the bridge.