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提醒码 / REMINDING BAR CODE

提醒码

This reminding code can remind students to the school library to return or renew the book, and the red areas on the code will decrease with the increase of borrowing books days from the library. When you return a book or renew the book to the school library, after a bar code scanner reading the bar code, red will be full of the entire area again.

University

Zhengzhou lnstitute of Aeronautical lndustry Management

Zhengzhou lnstitute of Aeronautical lndustry Management
Zhengzhou, China

Design

Zhengzhou lnstitute of Aeronautical lndustry Management

Zhengzhou lnstitute of Aeronautical lndustry Management
Zhengzhou, China