Recently, the expo oil hall began to test operations that were built by Daqing Oil Field. The oil hall is located in D Area, Puxi district at the Shanghai World Expo. The exterior surface of the building is the combination of large area fluid PC boards and LED fine imaging. It is a world first. It shows fantastic crystal clear lighting and shadow effects under night. Visitors have given it the name 鈥淥il Cube鈥?