1.We have received your queries on May 15 with thanks and are glad to supply you the price list and sample of products.The shipment of all goods will be done on time. 2.Once we receive the purchase order (PO),we shall make the quantity of order accordingly,and it is non negotiable once it is committed. 3.The selling price is subject to market rate as the raw material cost is increasing. 4.Please confirm the first order. 5.Hope to see you again for the next transaction.