JB factory may not be known to many end buyers, but it is actually a big factory behind the scenes. It is said to be one of the shareholders of a state-owned movement factory. It is very good at refitting tourbillon movements. Many types of tourbillons on the market are actually developed by JB. . Rather than saying that JB is a replica watch manufacturer, it is better to say that it is a movement manufacturer. The Roger Dubuis tribute series of double tourbillons came from this factory and caused a great sensation at the time. But what really made JB Factory AAA Replica Watches famous is the Fifty Fathoms Tourbillon of Blancpain, so it is called JB Factory for short.