Changjian Guo Books

Zhongguo lu you
Zhongguo lu you

By Changjian Guo

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Zhong wen ban Illustrator CS5 ping mian she ji gao ji an li jiao cheng
Zhong wen ban Illustrator CS5 ping mian she ji gao ji an li jiao cheng

By Xin Peng, Changjian Guo, Junwei Qi

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Ben shu cai yong xiang mu jiao xue fang shi, tong guo da liang an li xun xu jian jin di jie shao liao Illustrator CS5 de ge xiang gong neng, nei rong han gai Illustrator CS5 ru men, lu jing hui zhi...

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Zhong guo hui hua
Zhong guo hui hua

By Changjian Guo

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What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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