1. In making a firm offer, you should mention the time of shipment, the mode of payment desired, and give an exact description of the goods.

2. Once a firm offer has been accepted, it cannot be withdrawn.

3. The letter of rejection should cover the following points:

a. to thank the seller for his offer

b. to express regret at inability to accept

c. to make a counter offer if it is appropriate

d. to suggest other opportunities to do business together