Hi,i have used alibaba and also use some of the suppliers there. If you use TT be sure the company can provide a test invoice so that the name of the company and bank account is the same.
Some of the suppliers at alibaba also use paypal because lots of people prefer paypal or credit card. I have a list of chines sites using paypal.
Just beaware that Paypal does not give any buyers protection outside of ebay website.The best thing to do is if you find the parcel is not original don't accept delivery and report it as NON delivery to Paypal...
I ran into the same problem and I am liable to loss my funds to a scammer even though I use Paypal as a form of payment.So to me the Paypal buyer's protection is useless.