Asus, Gigabyte, MSI, ASRock, Biostar, PCChips, PowerColor, Jetway, XFX, Zotac, DFI, ECS (EliteGroup), Foxconn, etc. etc. etc.. Are all Chinese / Taiwan companies..
Pretty much EVGA and Intel are the only ones who are USA companies that make circuit boards.
On the server side, things tend to tip a little bit more onto the USA side as well with companies like SuperMicro, but they still have Chinese companies with very very cheap labor, like Tyan, to compete against.
EVGA man, they're hanging in there!
Onboard RAID vs. 3Ware RAIDI never recommend people run RAID-5 with onboard chipsets.