In August 2020, Jiangxi Jien Heavy Industry Co., Ltd. successfully passed the test of Optical fiber composite submarine cable with cross-linked polyethylene insulation for rated voltage of 120/220 kV HYJO41-F 127/220 1×1600+2×12B1 at the China national center for quality supervision and test of electric wire and cable.
        This means that our company once again broke through its own technical difficulties and realized the leap from medium voltage to high voltage for submarine cable products. In the future, our company has taken a big step towards market expansion in the field of high-voltage submarine cables.