Generally, it is on the bar code paper, and also on the washing water label.

Generally, the code format of brand clothing item number is as follows:

brand+year (quarter)+category+serial number+color+size.

for example, 2116325 means that it was produced on March 25th, 21, and 6 means that the style is pants, mostly numbers and letters.

Extended information:

A series of Chinese characters and numbers of general clothes are on the tag that comes with them, which is also called certificate.

1. Name and address of the manufacturer. It is required to indicate the name and address of the factory, and the name and address of the factory must be registered in the industrial and commercial department. Imported clothing can only indicate the place of origin, but it also needs to indicate the name and address of the agent registered in China.

2. product name. It is required to give priority to the selection of national standard names; If there are no provisions in the standard, names or common names that will not cause misunderstanding should be selected, such as "casual pants"; It is allowed to use "strange names" and "trademark names", but the normal names should be marked on the same part.

3. size. It is required to mark the specifications of clothing according to the new size standard, and it is not allowed to use the existing old size specifications such as "S, M, L, XL" alone. The size should be marked according to the size (height) and type (chest circumference, waist circumference) of the human body; Considering the consumption habits of some consumers, it is still allowed to mark the old and new sizes at the same time, but the new size should come first. For example, the tops of men's suits can be marked as follows: 17/88A(M).

Reference: Baidu Encyclopedia-Product Certificate