About coding, it is an important link to enable management software; Coding is like your ID card. When the household registration department registers your ID number, all your relevant information is entered. When you query again, all the information such as your gender, age and place of birth can be pulled out.

Coding considerations: 1. Uniqueness must be guaranteed, that is, it is unique among all your goods. When used, this code is the ID number of your product; 2. In order to be convenient to use, the length and identifiability of the code should be considered when the problem can be solved, and at the same time, the rules of various bar code systems-different bar code systems should be considered.

Bar code: it is a way to represent the code of your number with a combination of black and white bars with different proportional spacing; It is convenient for mechanized scanning operation, and the scanning gun will automatically compile and restore to numbers or characters according to the reflected information; When printing barcodes, different formats can be used, such as EAN 13, ean8, U 128, code39, etc. Usually we do one for the convenience of internal logistics; It should be called logistics code, and the more suitable formats are usually C39 and u 128, while the common 13-digit code at the beginning of 690-693 in shopping malls needs to be applied, which is called sales code, which can guarantee the unique code of your goods nationwide; Is to enter any shopping mall in the country, as long as it is scanned, it is destined to be your product. Logistics coding is suitable for small-scale use and may conflict with the outside world. It is no problem to use them within your own sales network.