The recent 35kV photoelectric composite submarine cable production order for the IV1 project of Huaneng Dalian Zhuanghe Offshore Wind Farm is under tight schedule, heavy tasks, and the severe domestic epidemic situation. All employees of the company work together to face and overcome the difficulties. Whether in terms of technical solution, producing level, or adjusting equipment and delivery guarantee, Jiangxi Jien Heavy Industry has withstood the test and ensured that the nearly 60KM submarine cable of the IV1 project of Huaneng Dalian Zhuanghe Offshore Wind Farm was successfully delivered on August 8th, 2021.