Is Laigang a subsidiary of Shangang?

Shandong Iron and Steel Group Co., Ltd. is a wholly state-owned company established by the transfer of state-owned property rights of enterprises affiliated to Jigang, Laigang, Nippon Steel and Provincial Metallurgical Industry Corporation.

Laigang, as a restructuring party, is of course a subsidiary of Shangang. It's just that Shangang has just been established and is still in the trial operation stage, so it's not surprising that Shangang's name didn't appear in the information before Laigang.