填空题

June 25, 2005
Dear Sirs:
Thank you for your letter of 1 September suggesting that we grant you a sole agency for our household linens(家用亚麻制品). I regret to say that, at this stage, such an arrangement would be rather premature. We would, however, be willing to engage in a trial cooperation with your company to see how the arrangement works. It would be necessary for you to test the market for our products at your end. You would also have to build up a much larger turnover(营业额) to justify a sole agency. We enclose price lists covering all the products you are interested in and look forward to hearing from you soon.
Yours faithfully,
George Smith
Manager
To become a sole agency, what else must the company do’
The company must build up ______.