15th October, 20xx(时间)
Karen Lew(被邀请人姓名)
1521 Its Rd
Rated QLD 4106(被邀请人通信地址)
Dear Karen： (以下是正文了，说明邀请原因及大概的到访、停留、离开时间)
PPS Dalian, China would like to invite you to visit our manufacturing plant in October for business meeting.
We would be obliged if you could arrive around the 18th October and be available for approximately 7 days, departing on 25th, October, 20xx.
I look forward to catching up with you on your arrival to China.
Kind regard,
Zhang Xiaoniu
General Manager, PPS Hi-Tech Co., Ltd.