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

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