Reference regulation from the accounting department about document on the Billing in December Y2019. We will get the Invoice on the day of the last 25-Dec-19 because of on 27-Dec-15 we will check the inventory end of year.Therefore, the PO that we send to you this month. Please prepare Invoice to us within days, 25-Dec-19 only. If you can’t send the Invoice to us immediately for 25-Dec-19, please prepare the Invoice in next year Jan’19.