I haven't heard of that, you can search the info. on internet youself.

Dear Mohammad
im walid abdin contacting u from china if u r still interested in chinese electronics supplies such as computers and others i can help you due this regard since im here in china travelling between guangzhou bejing and shenyang and can offer you what you need, my email is hotmail.com|walid_abdin anyway there are two fairs occuring two times per year known as canton fair in April and october.
salam