This is the future backbone of bitcoin. Pushing the limits of current technology, these computers are the highest tech in bitcoin mining. If you want to get involved in the future of money, this is the most direct way.
Though I can’t vouch for any of the companies on the list, I do try to keep out any obvious scams. Please do research and realize that there is risk in every business at this early stage in a new venture.
If you represent a bitcoin miner manufacturing company and would like to be considered as an addition please email firstname.lastname@example.org, or the mining equipment table thread in bitcointalk.org.