Nanjing Dongjia Shipbuilding Co., Ltd. is a Sino-foreign joint venture invested and established by Hong Kong Dongsheng Shipping Co., Ltd. and Nanjing Zhenglong Ship Supporting Industry Co., Ltd. The company is located in the Wujiang Riverside Industrial Park, Pukou District, Nanjing. The factory now covers an area of more than 180 acres and has more than 1,300 employees, including more than 200 various engineering and technical personnel. Various types of ships below 20,000 deadweight tonnage can be built. Since the construction of the first ship by Nanjing Dongjia Shipbuilding Co., Ltd. in 2002, the company has built more than 100 ships of various types for domestic and foreign customers. Ship products have been exported to Belgium, the Middle East, South Korea, Singapore, Malaysia, Indonesia, and Hong Kong. In Taiwan and other countries and regions, the product quality is well received by user units and national classification societies. Various ship products built have been approved by classification societies such as DNV.ABS.GL.BV.KR.CCS.ZC.

The company started to use two SRC-470SWG (flow 57m³/min, pressure 0.85MPa, voltage 10000V) air compressor from Shanghai Schneider Sunshine in 2008, which are mainly used for engine emission monitoring system, throttle control, control valve and The tool provides air power.