中国船舶重工集团
All confirmed DPVs in Chinese service are developed by the Kunming Wuwei Science &amp; Technology Trade Co., Ltd at Kunming, a solely owned subsidiary of Kunming 705th (Research) Institute Science &amp; Technology Development Co. (昆明七零五所科技发展总公司) at Kunming, which in turn, is a company wholly owned by the 705th Research Institute (headquartered in Xi'an) of the China Shipbuilding Industry Corporation. All DPV/SDVs (swimmer transportation devices) fielded by this contractor are developed by the design team with the following members: Liu Ning (刘宁), You Yun (犹云), Jin Zhongxian (金仲贤), Chen Haizhen (陈海珍), and Zhang Chun (张春). A total of 4 DPVs have been identified in Chinese naval service: