他们是塑料树脂编码和识别符号。

They are plastic resin codes and identify the resin.

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她买了一些罐装实物和一盒牛奶--但是后来检查发现这两种包装里都含有塑料树脂。

She did purchase some canned food and a carton of milk--only to discover later that both containers were lined with plastic resin .

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第一个，用于制造产品的原料的实际成本，如生产玩具的布料和玩具填充物，生产飞盘的塑料树脂。

First, there are the actual costs of the materials used to manufacture the product, which would be the textile material and stuffing for the toy animal and the plastic resin for the Frisbee.

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