which biological science companies sell cultures and Drosophila

I just read the web page of
[Only registered users see links. ]. It
introduce that "most biological science companies carry a variety of
different mutations. In addition these companies sell any equipment
needed to culture the flies". Can anybody suggest some company to
me? I do not have any mind that the company sell Drosophila. My
Drosophila was donated by another lab.

Thanks very much!

Frank Lee

Beijing, China