Where in China can I order a device for an individual project?

Question

Electronics

It is necessary to make devices in a small amount of about 20 pieces. According to an individual project, this device is something other than a box like a Card Reader with only a large number of holes for cards, in fact it is a piece of plastic where these cards will be inserted. And a small controller who will serve the whole thing.
Actually where in China with an adequate price / quality ratio?
Schematic format?

Answer 1

Look here: habrahabr.ru/post/206446/, it seems that this is what you need.