Compliment Slip printing
In much the same way as your letterhead, your printed compliment slips need to reflect the quality and professionalism of your business. Both should really use the same design in order to give a sense of continuity.
It may also be that you use compliment slips to talk to prospective customers – for example you might send out a sample and just pop a note on a compliment slip saying “this is the one we spoke about – hope you approve”. As with your letterhead, this could be the difference between getting an order and not getting an order.