This is back inside the market, what you are seeing here is a display of the Chinese name stamps or "chops" before they have a name carved on them.  You select the one you like depending on the size and decoration.

Then you get the shop to engrave your name, in Chinese of course, on the bottom of the stamp.  That turns it into a "Chop" and by using a block of ink you can then use it to seal or sign a document.