An Empirical Analysis on the Principal Business Contributions and Operational Performances of Listed Companies
主营业务是公司稳定利润的主要来源 ,其左右着上市公司的核心盈利能力和市场竞争力。主营业务利润占公司总利润的比重的高低及其稳定性还将影响公司经营业绩的稳定性 ,从而也影响公司的后续发展。因此 ,上市公司必须扎根主业 ,壮大主业 ,不断提高主营业务利润的比重 ,才能增加公司的价值和竞争能力。The principal business is the main source of listed companies' stable profit,and it controls their profitability and competitiveness. The proportion of the principal business profit to the gross profit and its stability will also influence a company's operational performance and stability, thus producing an effect on its follow-up development. Therefore, a listed company must take root in and strengthen and expand its principal business and continuously raise the principal business profit proportion. Only in so doing can the company mcrease its value and competitiveness.