中原高速：投资收益增长主要是参股联营企业利润增长贡献

Group 1 - The core viewpoint of the article is that Zhongyuan Expressway reported an increase in investment income primarily due to the profit growth contributions from its affiliated companies, including Henan Assets, Zhongyuan Agricultural Insurance, Zhongyuan Trust, and a new energy company [2] Group 2 - The company highlighted that the profit growth from its joint ventures is a significant factor in its overall investment income increase [2]