Hi,
I have been working on Quadcore designs, and now Octalcore designs for tablets for some time now.... Can you tell me more about your project, and its timeline, and at what stage you are at, so that I can help you complete it? I can help you with schematic capture, PCB design., CAD design of cases etc, then onto prototype and then turned into a production ready PCB Assembly, with all necessary manufacturing information? ( PS, I have also been involved in manufacturing electronics assemblies, for the last 20+ years, so I have a ton of experience to help you get the job into production easily, then packaged, and then shipped anywhere you need...)