According to your question about Debit note of CL2 and NaOH from Vinythai to Advanced Bio.(as attached), I would like to give you also about the price calculation as excel file was attached.
Normally,in the month end closing we can not use the actual price for invoicing.
So the provision price is applied first for invoicing month end closing,however the actual price will be absorbed in the next month by Debit note (D/N) or Credit note(C/N) for price difference only not effect to quantity.
There is the contract between Vinythai and Advanced Bio. about this invoicing that I think it should be kept in ECH Department.
Could you ask Khun Apichart for the full version?
I had informed Vinythai who sending this monthly information to you as well in the next sending.
Any question,please let me know Krab.