During this period, if you drive on the Hangzhou-Huizhou Expressway, you may see such a picture — with an over 100-meter “train” slowly moving forward, the old asphalt pavement is gradually refreshed. This is called as geothermal renewable technology.

    As introduced by Hangzhou Highway Bureau, Hangzhou will usher in the largest highway maintenance engineering year in history, with an investment amount reaching RMB 1.12 billion Yuan, including RMB 600 million Yuan for expressway, and RMB 520 million Yuan for common trunk highway.