国产日韩欧美性爱,国产精品一二三色欲,啪啪啪国产一区二区三区,日熟女伦理一区二

Nanjing Yaohang Construction Engineering Co., Ltd. uses the full casing produced by Kengbo Machinery, adopts the full-rotation drilling rig and the rotary drilling rig for construction. It ensures the construction quality, construction efficiency and construction safety in the construction of Guiyang Duyun project, and creates brilliance again. The owners highly praised.

 

Nanjing Yaohang Construction Engineering Co., Ltd. uses a rotary drilling rig to drive the whole casing for construction. The pile diameter is 1.8m, the pile depth is 80m, it passes through the 40m sand pebble layer, and finally enters the middle weathered rock 2-3m. The geological environment is complex and the construction is difficult. 

Nanjing Yaohang Construction Engineering Co., Ltd. uses the full-sleeve full-rotation drilling rig produced by Xuzhou Dunan Heavy Industry Co., Ltd., using the grab grab to cooperate with the soil for construction. The pile diameter is 1.8m, the pile depth is 80m, it passes through the 55m sand pebble layer, and finally enters the stroke. The chemical rock is 5-6m, the geological predicament is complicated, and the construction is difficult.