Www.gjqkw.com's contribution to the advanced periodical network is wonderful. Students who have been exposed to publications often see this word: completed on the third. Many publishing houses claim that their publications are all three, so what are all three? The following advanced periodical websites explain to you: No.3 refers to: domestic unified serial number (CN number), international serial number and (ISSN number) mailing code.

Domestic unified serial number: it is the abbreviation of "domestic unified serial publication number", that is, "CN number", which is the code assigned to serial publications by the administrative department of press and publication. Refers to the code of newspapers and periodicals in China, which is the general name of the number arranged by the newspaper management department according to certain rules in order to facilitate the statistics and management of the international serial number of newspapers and periodicals: the abbreviation of "International Standard Serial Publication Number", that is, the mailing code of "ISSN Number": regular periodicals can be ordered by post office with the mailing code. All regular periodicals can log on to the national postal network and make inquiries according to the postal code. Among them, the structure of CN number is: CN 14- 1324/G4 consists of the letter "CN" and six digits and the classification number, where CN is the country code of China, the first two digits are the area code, and the last four digits are the serial numbers of regional continuous publications, in which the serial number of newspapers ranges from 00 1 to 0999. The serial numbers of periodicals range from 1000 to 5999. The classification number and publication number are separated by "/",and our newspaper has no classification number for the time being. The advanced periodical network has found the CN numbers of publications in various provinces and cities: the CN numbers of publications in various provinces, autonomous regions and municipalities directly under the Central Government (formal publications are limited to the figures listed in this table, If the number is not listed here, it will be judged as an illegal publication) cn11–Beijing cn12–Tianjin cn13–Hebei cn14–Shanxi CN 15Cn23 Heilongjiang CN3 1 -Shanghai CN32 Jiangsu CN33 Zhejiang CN34 Fujian CN36 Jiangxi CN37 Shandong CN4 1- Henan CN42 Hubei CN43 Hunan CN44 Guangdong CN45- Guangxi Zhuang Autonomous Region CN46 Hainan CN50 Chongqing CN5 1- Sichuan CN52 Guizhou CN53 Yunnan CN54 Xizang Autonomous Region CN6 1 Xinjiang Uygur Autonomous Region www.gjqkw.com Senior Periodical Network CN65-