求翻译：山东世通旗下拥有全球鹰、英伦、帝豪、斯巴鲁、雷诺、三菱汽车授权经营品牌21家门店；是什么意思？

Shandong stone owns the Global Hawk, in Britain, Dorsett, Subaru, Renault, Mitsubishi Motors authorized brand 21 stores;