The larger shipyards in Putuo District are COSCO Shipping, Yongyao Repair Factory and Ou Hua Shipbuilding.
My family has another Yuheng Shipyard under construction in Luomen. I've seen it. It's about the size of our factory in Jiangwan, Yang Fan.
Others include: Cizi Shipyard, Xingzhou Shipyard, Yancang Shipyard, Maozhi Shipyard, Gan Lan Shipyard, Sanjiang Shipyard, Changzhi Shipyard, Pan Zhi Shipyard, Yihai Shipyard, Cheung Kong Group, etc.