Dalian, China
Dalian QianLong Marine Engineering Co., Ltd. was founded in 2008 and has since obtained ISO9001:2008 international quality management system certification. The company specializes in underwater engineering services, with over 60 certified divers holding certificates from the Chinese Ministry of Transport. It serves industries such as oil, power, water conservancy, shipping, port operations, and bridge construction. Dalian QianLong Marine Engineering has offices in Qinhuangdao, Tianjin, Yantai, Qingdao, Rizhao, Shanghai, Zhoushan, Fuzhou, Xiamen, Guangzhou, Shenzhen, and Zhanjiang, sharing resources with multiple diving companies. The company holds certificates from 10 international classification societies including CCS, ABS, LR, DNV, BV, NK, GL, RINA, KR, and RS. Its main services include underwater inspections, ship hull cleaning, propeller polishing, and underwater repairs such as hul
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