1, same industry. China Construction Third Engineering Co., Ltd. and China Construction Nanyang Development Co., Ltd. are both large enterprises in the construction industry, with the same industry.
2. They are all state-owned enterprises. China Construction Third Engineering Co., Ltd. is a large-scale construction and installation backbone enterprise in China, and China Construction Nanyang Development Co., Ltd. is a state-owned enterprise of China Construction and China, both of which are state-owned.