It is scheduled that our company will hold a New Product Release on December 18，20xx at Orient Hotel. We will display our new products, and invite relevant experts to make reports. There will be a business discussion after the meeting.
Thank you for your cooperation for many years. You are cordially invited to attend the Release. Please reply to confirm whether you will join before the end of November. We look forward to your attendance.
Yours sincerely,
Zhang Wei
Marketing Manager of ABC Company