The history is fascinating, though unfortunately I know of few people outside film-themed forums whose eyes wouldn't glaze over at such discussions. ;-)

There used to be a dye-transfer lab in China (after the last Technicolor lab in England closed in 1978) but I think that one is gone now too. Richard W. Haines used the Chinese lab for his films and he wrote an article in 1991 for The Perfect Vision magazine called "The Return of Glorious Technicolor" which is very informative, if you can find it.