Dear Jeff Wang
Mr. Vanchai let me to follow up your technician visit to solve the THB50 banknote problem. He also commented the AP-709 recognized the THB50 banknote as THB20 banknote proved and suspected that the AP-709 possible only did size detection not properly (CIS) image detection as confirmed before. The visit schedule must be fixed now as it is almost 10 days ago and your technician passport shall be ready for his trip now.
By the way, can you let your technician carry the AB-308 claimed parts this trip?
We are looking forward to your appointment soon.
Best regard