We list more than 2,400 sites on our Directory of Electronics Manufacturing Services Companies. Of them, I would hazard to say at least 15 to 20% now offer some form of ODM/OEM work.
It’s not always who you’d think, either. While the obvious companies are there — Foxconn, Pegatron, Wistron, Flextronics, etc. — more and more smaller firms are joining the fun. Everyone from Hunter Technology, which builds discrete RF/microwave components in California, to Mikroelektronika, which makes fare boxes in the Czech Republic, are involved in some sort of original design manufacture or outright OEM work.
At some point I’ll sit down and count out the exact number. Suffice it to say, it will be significant. EMS firms never sit still.