I checked a few sites. You don't mention what chips you were specifically looking for, so I checked a small range.
Variety of styles:
BuyPokerDirect
- allows Brazil as a country
- state is manually entered.
Claysmith chips (Milano / Desert Heat / Bluff Canyon) :
Claysmith Gaming
- allows Brazil as a country
- state appears as a drop down. Seems accurate, at least to my eyes.
Sunfly Ceramics :
BR Pro Poker
- allows Brazil as a country
- state appears as a drop down. Seems accurate, at least to my eyes.
For other sites, it might be best to contact the vendor to see if they ship to you.