I am looking for memory cards (SD and TF) to sell bundled with the phones that I sell in Australia. Looking through the Alibaba site of Gold suppliers, many of them advertise that they have factories. However talking to a few online, most of them turn out to be buying agents or shop owners in SZ and other places.
My question is apart from visiting China , how can we verify those that do have a genuine factory as distinct from who makes tall claims on having one.
Also does one know of a genuine supplier of LCD screen (including reversing cameras). My inbox is full of free members all saying that they are the biggest manufacturers of LCD screens. I guess I should trust all or no one.

Replying to [sam_australia]:

Even you come to visit the company, they will show you their "manufactory" as you requested. It's not a problem for them to show you a factory even though they don't have one. Some company show their factory in their vedio on Alibaba.com are faked.

Replying to [deruc liang]:and many company are registered in HongKong area, not only in China mainland.

the memory cards factory dont sell memory cards, the get order from the trading company and they produce them.

Dear friend

The main products in our company are memory cards , mobile phones and so on . If you are interested you can go to our website have a look and I think it can help you more .

SD Cards
MINI SD Cards
TF Cards
CF Cards
XD Cards
MMC Cards
Memory Stick
SONY Memory Cards
Kingston Memory Cards
KingMax Memory Cards
SanDisk Memory Cards
1GB Memory Cards
2GB Memory Cards
4GB Memory Cards
8GB Memory Cards
16GB Memory Cards
32GB Memory Cards
Large Capacity Memory Cards

http://www.goodscool.com/china-wholesale/Memory-Cards/

Wish you good luck !