Pretty sure all the Mac Precision sockets are made in Taiwan, weirdly enough they're the only sockets I have ever manged to break, the 10mm is cracked in 3 different places, the 13mm is cracked in one place.. and I have been chasing the Mac Guy for along time trying to get them replaced.
Great sockets for working on rust and damaged nuts/bolts though.. and I got mine decently cheap.
The hammers I believe are Proto rebrands, I also have a few reducers that are proto rebrands as well. (alot cheaper from proto)
All the Expert stuff is Expert By Facom/Mac and who ever els and is all made in Taiwan.