Rearrange the following numbered sentences so that they will read logically in a request letter. 1)A long-term cooperation will be of benefit to both of us. 2)Looking forward to your prompt reply. Thank you very much. 3)We are one of the top import and export companies in Russia. 4)Our average order range from 50,000 to 70,000 cans. 5) It is my pleasure to tell you that we are interested in your cannery recommended in China Daily. We’d like to know whether you could offer us a discount.