White office paper is worth more than mixed paper, for example, and bottles made from a single kind of plastic are worth more than an assortment.

比如说，白色的办公室用纸就要比各种混在一起的纸张要卖得贵，用单一种塑料制成的瓶子也要比用混合塑料所制成的要值钱。

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This includes business card printing and membership card classification mixed paper and Office paper.

其中包括制卡和会员卡制作混合纸和分类办公纸。

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Experiment results showed that solvent pretreatment can effectively promote the deinking efficiency for mixed office waste paper.

实验结果表明，溶剂预处理可以有效地提高混合办公废纸的脱墨效率。

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