All I put was company logo and their address and then it just said that I was employed remotely as (my job title) and was able to work remotely from any country, including thailand and it was signed by the company owner. My DTV was granted 2 days after submitting the letter
as they asked for me to get a letter from a client stating I can work remotely from any country including Thailand and unfortunately in your profession it's not allowed to do this job in Thailand so soft power probably better