Dear [Recipient],
I am writing to apologize for the contamination of [product] that occurred recently. I understand that this contamination has caused a significant amount of disruption and inconvenience for you and your business.
I take full responsibility for the contamination and want to assure you that I am doing everything in my power to rectify the situation. I have already taken the necessary steps to ensure that this does not happen again in the future.
I understand that this contamination has caused a great deal of disruption and inconvenience for you and your business and I apologize for any financial losses or other difficulties you have experienced as a result. I am committed to doing whatever it takes to make sure this never happens again.
I understand the importance of quality control and I am taking steps to ensure that all of our products are of the highest quality. I have implemented a rigorous quality control system and I am confident that it will prevent any future contamination.
I understand that this incident has caused you a great deal of stress and I am truly sorry for that. I am committed to doing whatever it takes to make sure that this never happens again.
Again, I apologize for the contamination of [product] and any disruption or inconvenience it has caused. I am doing everything in my power to make sure this never happens again.
Sincerely,
[Your Name]