Today, the ultra-large diameter shield machine independently developed by my country was launched in Zhengzhou. It will be applied to the construction of the Western Australia Harbour Project, once again breaking the record of the excavation diameter of my country's export of overseas shield machinery.

This knife plate is painted with Australian local totem cultural patterns. The excavation diameter is 15.7 meters, which is equivalent to the height of more than 5 floors. The length of the whole machine is about 113 meters. It is currently the largest diameter shield machine exported overseas in China. The whole machine integrates a number of intelligent technologies.

The shield machine that was offline today will be used for the construction of the Western Australia Harbour Tunnel. Up to now, my country's various types of shield products have been exported to 34 countries and regions on five continents around the world.

(Reporter Li Weidai of the General Station)