IMPORTANT!
If you change quantity of the products you want to order in the "Qty" window, make sure to click the "Update" button on the right hand side of the shopping table.
Given that customers from all places would place orders at the same time, our stock level will change correspondingly from time to time. Hence, we have to check the stock level before arranging goods delivery. When any product item is out of stock, we have to arrange refund even though order and payment have been received. Customers' understanding of the practical constraint is highly appreciated.