dear Khun krit
Thanks. Sorry for late response
I will discuss on 20 October with my boss accountant for the new cost of sale. and reply to you on 21 october
however, I need 3 more data/ info so it can be more clearer for my boss accountant
1) Send data of the "new" cost of sale for the whole month of July, August, September
2) send data of the "old" cost of sale for the whole month of July, August, September
3) How much THB is the difference between the " new" and " old" , for each month of July, August, September
Awaiting
Ijen