Dear Sir/Madam, I would like to express my congratulations on the continued prosperity of your company. I also extend my heartfelt gratitude for your exceptional support. Regarding the product mentioned in the subject line (the product in the attached document), which has been promoted by our sales representative, we have discovered a defect in the LAN characteristics during our acceptance inspection. We sincerely apologize for the significant inconvenience this may cause you, and we have decided to temporarily suspend its release. We will provide you with details regarding the nature of the defect, the circumstances surrounding it, and the measures we will take, and we kindly ask for your understanding. Sincerely,