Dairy -farms In Isaan

Hello, is there someone who knows where are dairy farms in Isaan and what kind of dairy products they produce. Sell they to everybody or only wholesellers.

I remember that, a couple of years ago, in Burirum a guy made and sold Briestyle cheese but I lost the phone-number. There must be also another farm in Khon Khaen but i can't find the place.

For any information many thanks