Correct me if I am wrong, I am looking for semiconductor manufacturer that you can contract with NDA covering your design rights to produce the chip, the semiconductor manufacturer should have his staff translating design to wafers and produce the targeted chips.
Yeah, that is pretty much it, but to be blunt that NDA is only a piece of paper and in many of the locations it's not worth it's weight, this is why most semiconductor companies keep things in house... That or know the company you are working with very well...
IMO if you do outsource it might be best to do it though a 3rd party or closet corporation, to help hide the market sector or use... I have seen first hand when a supplier found a market from a client and then stole that market using the clients own design or solicited the design to competitors... The less the contractor knows about the design/use and the company paying for it the better...