The rectangular label on the back of the collar of clothing is called a mark.

Mark, a transliterated noun, is the "mark" head. 1. The meaning of trademark, 2. The mark made on the packaging of import and export goods, taken from the English "mark". The "mark" in foreign trade is to facilitate the identification of goods and prevent the wrong goods from being sent. It usually consists of a model, a graphic or the abbreviation of the receiving unit, the port of destination, the number of pieces or the batch number, etc. It usually consists of a simple geometric figure and some letters, numbers and simple words. Its function is to make the goods easily identifiable by relevant personnel during the loading, unloading, transportation and storage processes to prevent mis-shipment.