(1) core products: this is the most basic level of products and the core content to meet customers' needs, that is, the real motivation of customers to buy. The task of marketing managers is to discover the real needs hidden behind products and provide customers with the core interests and services they need.

(2) tangible products. It refers to various specific forms to support the core interests of products, such as the specific characteristics of product quality, function, style, brand and packaging.

(3) additional products. Refers to the extra services or benefits that customers get when they buy products, such as providing credit, free delivery, after-sales service and so on. Additional products are an effective way to distinguish the products of enterprises from competitive products and implement differentiation strategies.