Plastic and paper is separated into fewer colours and categories; indeed, many types of plastic are not accepted at all.
塑料和纸制品在颜色和类别的分类上都显得不足。实际上，有很多种类的塑料制品压根就没有被回收。
Plastic and paper is separated into fewer colours and categories;
塑料和纸制品在颜色和类别的分类上都显得不足。
What are the top categories of plastic resin used in medical devices?
医疗设备用塑胶的主要分类为何？
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