由在不同工厂生产同一产品的生产商采用的某一识别标记用来区分某一产品是在哪个工厂生产的
A certain identification mark adopted by producers who manufacture the same product in different factories is used to distinguish which factory a certain product was produced in
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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