TOEIC® question: Vertical integration

[Hongrose1986]

vertical integration: business structure in which a parent company owns the means of production, distribution, and final sale

please explain the words underlined to me

thanks

[Toeic]

This is part of the vertical integration package: the parent company owns the infrastructure including the means of production and sale to the consumers (the end users). These can be retail outlets, stores or other forms of final distribution.