The code of concentrated packages, for indicating
quantities of content products.
1 digit for Standard version(14-digit),
and 2 digits for Extended
version(16-digit). in latter case, the first 1 digit
is dummy (fixed to 0), in order to let the code length even.
A barcode which
is used only by specified shops, chains, the routes of distribution.
The number 20 - 29 is used for its flag.
For its character of usage, it is often used by NON-PLU
with including prices.
International Article Numbering Association EAN
Administrative organization of the international
common product code. Established in 1977, for European countries
of free economies, then many countries from over the world
joined one after another. Reorganized in 1978.
5-digit product code next to maker
code of JAN code.
The Maker can decide the item code freely.