Manufacturers...

Depending on your manufacturing techniques, you can get great quality from China or India. If what you are making can be completely spec’ed out for CNC, why not try a couple from China? Shipping it back will take a long time and require going through customs, but it can be done, and done well. You just need contacts.

Instead of looking for ‘manufacturers’ here, though, look for fabricators, prototypers and upholsterers.

It won’t be cheap.