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亚马逊upc码是多少位数字数字代表什么意思一文读懂
upc码(商品条码),code39码(可表示数字和字母,在管理领域应用最广)
测试结果如下:github:https://github.com/fengbingchun/barcode_test
upc型号条码国际标准
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