here what it is
the brand not important. i have try to look on taobao but i only find silicon . i have look with my chines friend but he don't know the word in chines for latex.
if you know a store for this kind of stuff that will be good . or is you are able to find it on taobao, great. i know there is art store near the big museum but i don'T think they have this
thanks for any body that can help.