Hi liyuliuliu,
How about this one for the meantime -
Link hidden: Login to view :)
It says 'manufacturer and factory direct seller of mono crystalline solar cells'. It is based in California and the site was created in Feb of 2008.
Quite difficult to search for this thing primarily because I don't know anything about it. :) However I hope this one is right.
I'll try to get back and do further search when I have extra time today. Otherwise I will just get back to you in a couple of days. :)
Again, please note that we cannot guarantee the safety of any suppliers outside SaleHoo.
Kind regards,