Only say 4 ** can not determine which country, involving 19 countries or regions, such as Hong Kong 489, Japan 45, 49, Germany 40-44.
Supplementary information: 13-digit bar code before the first 2-3 digits to indicate that the country, for example, our country is 690-695, and not the beginning of the 6 are our country. Similarly, there are many countries beginning with 8, such as South Korea is 880, Thailand is 885.
:The commodity bar code is used in the circulation of goods for identification of the global bar code. Commodity barcode consists of a set of regularly arranged bars, blanks and their corresponding characters, indicating certain information. Commodity bar code bar, empty combination of parts known as the bar code symbol, corresponding to the symbol part of a group of Arabic numerals known as the commodity identification code.
The barcode symbol and barcode code correspond to the same information. Barcode symbols for barcode reading equipment scanning and reading, barcode code for people to read. The national standard specifies the code, structure, size and technical requirements of commodity barcode.
The commodity item code of commodity barcode is compiled by the manufacturer itself, which indicates the category, specification, packaging form and other information of the commodity. According to the principle of uniqueness in the compilation of commodity item code in GB12904-2003, the same commodity identification code should be assigned to the same commodity item. Commodities with the same basic characteristics are regarded as the same commodity item, and commodities with different basic characteristics are regarded as different commodity items; commodities with different commodity items should be assigned different commodity identification codes.
The commodity barcode includes EAN barcode and UPC barcode. GB12904 is mainly based on the EAN application specification, and China promotes the application of EAN barcode. UPC barcode is mainly used in the United States, Canada and other countries. China's exports to the United States, Canada, food, health care goods need to apply for the use of UPC bar code.
Barcode knowledge - Baidu Encyclopedia