The top ten information sources do not include product information.

The top ten information sources are: oral information source, text information source, document information source, electronic information source, physical information source, institutional information source, conference information source, personal information source, comprehensive information source and network information source, excluding "product information".

Product information mainly refers to the detailed information of various products, such as brochures, advertisements, brochures, etc. Although these materials are very common in our daily life and play an important reference role in purchasing and using products, they are not regarded as an independent main category when we talk about the main sources of information.

This may be because product information is often classified as other information sources, such as literature information sources, electronic information sources or physical information sources. However, no matter how classified, we should realize that different information sources have their unique values and functions, and they are indispensable in the process of seeking knowledge and understanding the world. Therefore, although product information is not included in the top ten information sources, we should fully realize its importance and make good use of it when necessary.

The definition of the top ten information sources:

1, Library: rich books and periodicals resources, covering all fields of knowledge and information.

2. Internet: the largest information base in the world. Real-time and diverse information can be obtained through search engines, news websites, social media and other channels.

3. Academic journals: The latest research results and academic trends in professional fields are authoritative and in-depth.

4. Government agencies: official information such as policies and regulations, statistical data and public services. Is authoritative and reliable.

5. News media: timely report news events at home and abroad, and provide diversified viewpoints and interpretations.

6. Academic conference: an exchange platform for the latest research results, development trends and academic trends in professional fields.

7. Specialized database: data resources in specific fields, such as academic papers, patents, technical reports, etc.

8. Industry Association: You can enjoy the latest policies and regulations, market trends and information of member units in the industry.

9. Consulting company: provide professional information and suggestions on market research, industry analysis and strategic planning.

Personal network: the sharing and transmission of information in interpersonal networks, such as expert opinions and practical experience.