由于我国某些上市公司在公开上市时是原企业集团剥离出的优质资产,因此与原企业集团存在着天然联系,关联交易有时不可避免;大股东旗下的其他公司在很多情况下存在着和上市公司同业竞争的问题。关联交易和同业竞争使得上市公司的独立性和盈利能力受到很大限制。近几年,我国很多上市公司出于减少或消除关联交易和同业竞争的考虑而向大股东定向增发,收购大股东旗下与上市公司存在关联交易和同业竞争的业务和资产。隧道股份就是很好的案例。 Because some listed companies in our country are the high-quality assets that the former conglomerates split when they are listed on the stock market, there are natural relations with the former conglomerates. The related transactions are inevitable sometimes; other companies under the big shareholders exist and are listed in many cases Company competition with the industry. Related party transactions and peer competition make the independence and profitability of listed companies are greatly restricted. In recent years, many listed companies in our country have issued additional shares to major shareholders for the purpose of reducing or eliminating related party transactions and horizontal competition, and acquired related parties and listed companies with related businesses and assets with major competitors. Tunnel shares is a good case.