Set meal, initially only refers to a whole set of meals, and later refers to a series of activities. There are many kinds of bags in the bag. The seller combines products of different specifications according to the expected target to meet the requirements, and the buyer can choose the combination package varieties suitable for him according to personal consumption standards or taste preferences.

Combo is a form of sales adopted by sellers in order to obtain long-term users and maximize profits. Packaging is beneficial to both buyers and sellers, and it is a good marketing method to achieve a win-win situation. The name attribute of new products is formed by dividing customers into individuals and binding new tariffs to specific products or product combinations for marketing purposes.