What is the relationship between Tianshui Great Wall and Tianshui 2 13?

They are all subsidiaries of Lanzhou Great Wall Electrician Co., Ltd. According to the inquiry, the subsidiaries of Lanzhou Great Wall Electrician Co., Ltd. include Tianshui Great Wall Kai Guanchang Co., Ltd., Tianshui 213 Electric Appliance Co., Ltd., Tianshui Hydropower Transmission Research Institute Co., Ltd. and Tianshui Great Wall Control Electric Appliance Co., Ltd. Lanzhou Great Wall Electrician Co., Ltd. is a state-owned listed company supervised by the State-owned Assets Supervision and Administration Commission of Gansu Province, and its controlling shareholder is Gansu Electrical Equipment Group Co., Ltd.