The event is being held jointly by the Vietnam E-Commerce and Information Technology Agency under the Ministry of Industry and Trade and the Vietnam E-commerce Association.
Nearly 61,000 promotional products will be up for sale on the website OnlineFriday.vn and the mobile app.
An introduction at this year's programme is that customers can report violations of businesses to the organising board, such as incorrect information of product, quality and promotion prices. The board will handle consumers' feedback via Real-Time (information updating and warning system).
The programme will also launch supporting websites, such as Websosanh.vn, Topgia.vn and Chongiadung.com, to help customers choose the best products.
Some 50,000 products in various categories were on sale on the website www.OnlineFriday.vn at last year's event.