From my experience my guess is it would go down like this:
You contact Fifi and she would tell you that they have exactly what you want. You tell them you are looking for a reliable suppler and you need a sample of the product that they have pictured. Fifi will tell you it is exactly as pictured and exactly what you are looking for. They will send you a sample for free but it will cost you $527.37 for shipping. You agree and they give you a "tracking" number right away. About a week later you decide to check on the tracking number and see it was a package shipped to France. You contact them about this and they assure you it was a mistake (with the shipping company). They gave you the wrong tracking number. They give you a new tracking number and you see it hasn't even shipped yet. Then you get an e-mail the next day saying it has shipped. Then you get 2 or 3 e-mails per day asking if it has arrived yet (even though they have the tracking information just as you do). The you get a call at 3am from Fifi asking why you haven't replied to the e-mail she sent 5 minutes earlier. You politely tell her to STFU and you will get back with an e-mail, because you can not understand her well on the phone. You read Fifi's e-mail and she says she really hopes you like the sample and wants your skype name so you can talk...not business...just as friends. You finally receive the sample and it is a cheaply made 5 foot long electric car instead of a pinball machine. You contact Fifi and tell her you got a car instead of a pinball machine. She tells you it was a mixup with the factory and she can make it right on the next one or with your first order from her company. She really has exactly what you want. You polity tell her to stuff it and it hurts her feelings and she pretends to cry in the e-mail and assures you her business is a good one. Number 1 in Chine and has been in business since 492AD. Then you say goodbye Fifi and are out $527.37 and only have a 5ft electric car that doesn't work and amazingly for its size looks like it probably only cost $14.97 to build.
So I would only recommend contacting Fifi if you want an e-mail pen pal or a skype friend from the far east.