Sometime you need the English translation service for your documents. When I applied for my Green Card for moving to USA, I needed to translate a lot of Thai documents. I used the translation service from Language Corner which locates in Nimmanhaemin road at soi 13. The staffs were helpful and the price was reasonable.
All documents translated by Language Corner meet the standards necessary to be approved and accepted by Thai government offices, including the Ministry of Foreign Affairs.
Today I just use their service again and the service is excellent. I have been using their translation service for 15 years. I always recommend their translation services to my friends.
If you are looking for the translation services for your documents in Chiang Mai, you should consider Language Corner to be one of your choices.