Core Viewpoint - The article emphasizes the importance of issuing invoices in various everyday scenarios and the legal obligations of businesses to provide them to consumers [1][9]. Group 1: Common Scenarios - In a restaurant setting, customers should always request an invoice, as it is their right, even if the staff claims they have run out of invoices [3]. - After refueling at a gas station, customers can still request an invoice later, although it is advisable to do so immediately [5]. - Individuals renting out property are also required to issue invoices upon request, regardless of whether they operate as a business [6]. - For courier services, customers should be aware that they have the right to request an invoice, even if the staff suggests it is uncommon [8]. Group 2: Legal Framework - According to the "Invoice Management Measures of the People's Republic of China," businesses must issue invoices for any sales or services rendered [8]. - Failure to issue an invoice can result in penalties from tax authorities, including fines of up to 10,000 yuan [8]. - Repeated violations of invoice regulations can lead to public announcements by tax authorities regarding the offending businesses or individuals [8].

Group 1 - The article highlights the importance of customer service in differentiating businesses, especially in competitive environments like gas stations [2] - The gas station at Jinan Refinery has successfully attracted high-end customers by providing attentive service, such as offering water and assistance during hot weather [1][2] - The customer, who is a company executive, expressed satisfaction with the service and decided to establish a regular relationship for fuel and car wash services [2] Group 2 - The gas station has introduced a new car wash service using imported wax that protects the car's paint, which impressed the customer [1] - The article emphasizes that in today's business landscape, the quality of service can significantly influence customer loyalty and repeat business [2]