The bar code number of Dunhuang Guzheng is eight digits at the beginning of mz.

Unique identification code. The bar code number of Dunhuang Guzheng is eight digits beginning with MZ, where MZ represents the brand of Dunhuang Guzheng, and the last eight digits are the unique identification code of the product. Bar code is a coding method for commodity identification and tracking. It can read the digital information on the bar code by scanning, which is convenient for commodity management and tracking. The bar code number of Dunhuang Guzheng is also set to facilitate the management and tracking of products.