Silk museum - paint brushes as souvenir

There is a nice souvenir shop where we can find of course silk, but also other items such as paintbrushes.
I do not know if they are with traditional or synthetic bristles (goat or horse bristles for calligaphy, hare or weasel bristles for painting).
NB : In China, for silk (as for many other things too), watch out where you buy because counterfeits are commons...