Regarding the situation of Phrae and Chaing Mai, etc. I have the appointment for visit them on 27th February - 1st March at Chiang Mai and Phare Province. They let me know that, They're demonstrations to the farmers for peel the cortex in each area now and will start for purchased dried cortex on middle of March.
After, I come back from Phrae and Chaing Mai, I will information to you know.