星河智荟“益家建材联盟大型团购”邀请函， Invitation letter for ‘Huijia Building Materials Alliance Big Discount Activity’ on 9.23 at Wanda Cultural Center in Guangzhou, China. This invitation letter is designed to promote the upcoming event and create excitement among attendees. The design features a modern and elegant layout with vibrant colors and eye-catching graphics. The text is written in a clear and concise manner, making it easy for readers to understand. The invitation includes essential details such as date, time, location, and activities involved in the big discount activity.