The main source of information for consumers.

Personal sources, business sources, etc.

1. Personal sources: This includes family members, friends, neighbors and acquaintances. Consumers often seek opinions and suggestions, are closely related to consumers and can provide real experiences.

2. Commercial sources: Commercial sources include advertisements, salesmen, distributors, product packaging and exhibitions. Advertising is the main source of business information, which conveys the information and advantages of products to consumers through media channels. Salesmen and distributors introduce products and provide sales and after-sales service through direct contact with consumers. Product packaging and display are also important ways for consumers to obtain product information.