The dock is about 910 meters long from luyong oil dock in the south to the south of the existing typhoon shelter dock in the north. One of the important contents is to build eight 20000 DWT multi-purpose docks, one 5000 DWT and one 1000 DWT general cargo wharf in the north of berth 20 of Dongdu port. Among them, there are 31 Hertz products including controller, low voltage capacitor reactor, thyristor regulator, etc.