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In 6, mark and sample: general to product batch number, production date, shelf life identification products.
标识及样品：一般以产品批号、生产日期、保质期等标识产品。
youdao
-
In 6, mark and sample: general to product batch number, production date, shelf life identification products.
标识及样品：一般以产品批号、生产日期、保质期等标识产品。
youdao