After sales service refers to various service activities provided after the sale of goods. Enterprises can improve their reputation, expand their market share, and enhance the efficiency and effectiveness of sales through after-sales service.

GB/T 27922 "Evaluation System for After sales Service of Goods" is a national standard used for evaluating after-sales service of goods. It specifies the basic elements that make up the evaluation system for after-sales service of goods, including principles, indicators, and methods. It can be used to evaluate the level of after-sales service both internally and externally (including third-party organizations), and provide reference for enterprises to establish after-sales service systems.

The certification of after-sales service for goods is based on the national standard GB/T 27922 "Evaluation System for After sales Service of Goods". The certification object of product after-sales service certification is service, which belongs to a type of service certification and is different from management system certification such as ISO 9001. The product after-sales service certification is applicable to the evaluation of the after-sales service level of production-oriented enterprises and sales service oriented enterprises within the territory of the People‘s Republic of China. The purpose of product after-sales service certification is to evaluate excellent after-sales service; The result of product after-sales service certification is to prove that the enterprise has implemented after-sales service according to standards and achieved a certain level (star rating).

Certified through product after-sales service:
·By obtaining authoritative certification, the after-sales service level has gained widespread acceptance;
·Standardize the management of after-sales service and continuously improve the awareness and ability of service personnel;
·Promote the improvement of after-sales service work in enterprises and enhance their competitiveness;
·Establish corporate brand and image, gain more recognition from consumers, and improve customer satisfaction;
·More advantageous points and positive references in unit bidding and government procurement.