You will need
- - form your company;
It seems to be easy, you found the same product at a lower price, and you should refuse another supplier with whom you have established long time business cooperation. But in this case the usual phrase "we are forced to refuse further cooperation" can be misinterpreted and perceived as an insult. In the business world you should be respectful to their partners and avoid the complete severance of the relationship, so you should write a letter of rejection so that leave the possibility of cooperation in the future, it is possible that the terms of this cooperation in the future can be changed for your benefit.
First of all, it internally tune that nothing bad you do not intend to write, and the failure-to-business communication does not mean any offense. You and your regular partners to pursue their goals, they can match or not match, but each of you has the right to reach them any more profitable, optimal and rational ways. Your task is to refuse in the most tactful and correct form. To make it not so difficult.
When writing a refusal particularly important personal addressing. Start with this treatment: "Good day, dear Ivan Ivanovich!". Be sure to thank the partner for the business proposal, which he sent to your address or for long-term cooperation. Here it is necessary to make it clear that the proposal was carefully considered or that this cooperation has been useful to you. You want your addressee seen in the text, the facts and words that are familiar to him. This confirms the sincerity of your words.
Turning to the actual failure needs to be articulated clearly, and the refusal, and the reasons that prompted you to reject the proposal or to suspend further cooperation. For example: "currently, we are unable to accept your offer, because our company does not have the ability to purchase the proposed product for a specified price" or: "We are forced to temporarily abandon cooperation with You on this issue as we were offered more favorable conditions, allowing to increase the efficiency of our company."
The letter of refusal should contain a reference to alternative ways of cooperation in the future: "We hope that our cooperation will continue and we will remain partners and will be able to implement several new projects."