Military

Bohai Shipyard
John Wilson Lewis and Xue Litai, China's Strategic Seapower, [Stanford University Press, Stanford CA, 1994] page 123.
Taking Stock - Worldwide Nuclear Deployments 1998 NRDC March 1998

Huludao
40°43'N 121°00'E

The Xia-class SSBN was constructed at the Bohai Shipyard, Plant 431 in Huludao, Liaonang Province.