1. product sales: merchants meet customers' needs by selling various commodities and products. Provide specific commodity selection, price tag, product display and sales channels.
2. After-sales service: the services provided by the merchants after the customers purchase the goods, including return, maintenance and warranty. Merchants improve customer satisfaction and loyalty by providing good after-sales service.
3. Consultation and suggestions: Merchants help customers make purchase decisions by providing professional consultation and suggestions. Provide information about product features, usage and technical support.