Dadaoshan quarry is the biggest quarry of Lianyungang, Jiangsu province, with the annual output of 2.4 million tons of gravels. The gravels are mainly used in the constructions of railways and roads.
According to the client in charge of Dadaoshan quarry, SANY SY420 excavators greatly improved work efficiency. “On avarage, SANY SY420 excavator only takes 5 minutes to load a truck of gravels, which highly raises the efficiency and saves time. So, I can get more benefits from the project and I am very satified with SY420 excavators’ performance,” the cilent said .