You are Susan.Your company will hold an opening ceremony for a new factory.You are asked to write an invitation letter to David,an important client of your company.The following information should be included:
the reasons to invite him;
the time for the event;
the place for the event;
early reply expected.

Mr.David: This is Susan. Our company will hold the groundbreaking ceremony of the new factory. Because you are an important customer of our company,we sincerely invite you to participate in the groundbreaking ceremony of our new factory. The time of the groundbreaking ceremony:8:00 am on July 6,2018; The location of the groundbreaking ceremony: Baofeng County Industrial Cluster District,Henan Province. Hope that I will receive your reply soon! Susan July 1,2018