I've been having similar questions related to smaller displays. It seems like there are lots of Chinese manufacturers, but not a lot of confidence inspiring infrastructure like qualified distributors.
My questions for anyone who has successful experience in this space would be....
1) What is your process for dealing with Chinese display manufacturers directly? In person meetings, emails, phone, etc? If this even possible if you are remote and only speak English, or do you need a native speaker there in China to do any real business effectively?
2) How do you evaluate if they will be an honest reliable vendor? Factory visits, references, reputation? Is there any sort of Chinese BBB (better business bureau) besides aliexpress rating?
3) How do you manage payment? Prepay, pay on delivery, escrow, etc?
4) Is there any benefit to going through a marketplace like aliexpress or does that just increase the cost?