Plenty specially around Pua, also in Tawangpha there is a few and the one
with the water bottling facilities, the owner spend many years in Hawaii and
speak a perfect English, he can be a lot helpful.
Beware on the Thai holidays, the province became very busy with the inbound
market.
There is a Tat in Nan but they are dependant of the Chiang Rai office, try
to ask them your questions and let us know, could be quite interesting.
tatcei@loxinfo.co.th
Enjoy.
oh