只此一家，别无分店

Explanation: Refers to something unique or alone monopoly. 　　Usage: Complex sentence; as attributive, clause; soliciting business terms 　　Source: Mao Zedong's "Yan'an Forum on Literature and in the speech" was accepted by the masses, the practice, rather than behind closed doors, try to be smart, only one company without any kind of aristocratic branch of the so-called 'statesmen'. " Thesaurus:  in a class by itself, This alone door, One goes for the