This is to express our intent to do business with your company. We received your letter that you are looking for a company to collaborate with for an upcoming project and we are very interested in working with you. As you have stated in your letter, we are attaching a business proposal which includes the budget proposal. We hope that you would be willing to discuss the matter with us soon so that we can further explain the details of our proposal.
We have heard so much about the excellent services of your company and we are very excited to work with you on a projcet. You have made quite a name in the field and we believe that if we work together, we will be able to reap more success. We are optimistic that you would accept our proposal.