After sales service refers to various service activities provided after the sale of goods. From the perspective of sales promotion, after-sales service itself is also a means of promotion. In the tracking and follow-up stage, sales personnel should take various forms of cooperation steps to improve the reputation of the enterprise, expand the market share of the product, and improve the efficiency and revenue of sales work through after-sales service.

After sales service is the most important aspect of after-sales service. After sales service has become a crucial element for enterprises to maintain or expand market share (such as Shuda, Tmall, JD.com, etc.). The quality of after-sales service can affect consumer satisfaction. When making a purchase, relevant regulations such as product warranty and after-sales service can help customers overcome doubts and hesitation, and make up their minds to purchase the product. High quality after-sales service can be considered a product of brand economy. In a fiercely competitive market, with the improvement of consumer awareness and changes in consumer attitudes, consumers are no longer only concerned about the product itself. In situations where the quality and performance of similar products are similar, they are more willing to choose companies with high-quality after-sales service.

Objectively speaking, high-quality after-sales service is a product of brand economy, and the after-sales service of branded products is often better than that of miscellaneous brands. The prices of branded products are generally higher than those of miscellaneous brands, on the one hand based on product cost and quality, and also because the sales strategy of branded products has already taken into account after-sales service costs.