There is not a fast bicycle brand; 2, \"fast\" is the English word \"fast\"; Many sports bicycles will use the words \"fast\" and \"sport\" to advertise their bicycles as sports and fast bicycles. It's a decorative word. It's common. It doesn't say anything about the bike.
There is no bicycle of this brand, it should be a bicycle produced by a small factory, and a few English letters are printed at will to fill foreign goods, it is not recommended to buy such bicycles.