Information sources of literature investigation

The object of literary investigation is literature, which requires a deep understanding of the types and sources of literature. According to the actual situation in China, the literature types of market information include;

① Statistical bulletins and statistical yearbooks published regularly by the National Bureau of Statistics and local statistical departments at all levels are authoritative general comprehensive data.

(2) information announcements issued regularly or irregularly by various economic information departments, trade associations and federations. This kind of literature or data has a strong orientation and is an important source of literature for market research.

(3) Relevant newspapers, magazines, television and other mass media at home and abroad. These media provide all kinds of direct or indirect market information in various forms and are the main search objects of literature investigation.

④ Regular or irregular statistical announcements or information exchanges provided by various international organizations, foreign embassies in China and foreign chambers of commerce.

⑤ Various domestic and international marketing conferences, such as expositions, trade fairs, exhibitions and order fairs, as well as documents and materials released at professional and academic conferences.

⑥ Internal information of industrial and commercial enterprises, such as sales records, purchase orders, various statistical statements and financial statements.

⑦ Market policies and regulations promulgated by government departments at all levels and relevant economic cases of law enforcement departments.

(8) Academic papers and investigation reports published by research institutions and institutions of higher learning.