Please follow this lesson: if we are in need of stock, if something is running out or already finished you should send a message to us to suggest that we order the item and how much you feel we need for our operations?
Did you get payment from Kai for the paper you delivered? Consumables are Cash on Delivery?
Khun Nok one of your responsibilities is to check our stock of items and request purchase of office supplies and consumables on regular basis. All request should show, how much stock remaining, how much requested to order. you contact the supplier, order it and then get the invoice to us for approval.