Packing mark include : product type, mass, product batch, checker number, net weight, total weight.
包装外标识内容包括：型号、数量、生产批号、检验工号、毛重及净重。
Gross weight is the sum of total weight of the commodity itself and the tare (the package weight). That's to say it refers to the net weight plus the tare weight of the goods.
毛重是指商品本身的重量加上皮重(包装的重量)，也就是净重和皮重的总重量。
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