vertical integration
noun [ U ] business specialized uk/ˌvɜː.tɪ.kəl ɪn.tɪˈɡreɪ.ʃən/ us/ˌvɝː.t̬ə.kəl ɪn.t̬əˈɡreɪ.ʃən/
（公司为全面控制整个生产过程而进行的）垂直一体化，纵向结合
a process in business where a company buys another company that supplies it with goods or that buys goods from it in order to control all the processes of production