Dear Teun,
Thanks for your e-mail.
After that we talked on the phone to the Thai embassy.
1. The Doc 1 , Doc 2 and Doc 3 Commercial Company Certificate and Tax registration.
you can show these documents to Thai Embassy.
2. For financial year report I think it is not necessary However; I will give you the document is used financial year report( Doc 4 ).
3. We have revised Invitation Letter to be the same as the actual trip.However; Please inquire with us Thai Embassy
Visa Thailand on business that is suitable for this trip again.
I hope it should be OK.
Best regards./Pongsiri.