In this regard, I would like to express my sincere appreciation for your assistance and support in arranging a possible program. Unfortunately, due to scheduling constraints, I regret that we have been obliged to postpone this visit. However, we remain extremely enthusiastic in our wish to deepen our excellent relations with ชื่อหน่วยงานผู้รับหนังสือ and learn from your experience, and we now hope to conduct the study visit next year.
Once again, thank you for your kind assistance and I look forward to our continued cooperation