随着美国废纸回收利用体制的不断完善，废纸标准又有了新的变化。新的标准是由美国“废纸再生协会”制定的，名为《废物规格通告1998》（简称SSC－98）。这一标准是指导性标准，不具有强制性。整个标准对非金属废物、金属废物等都作出了分类和规定。下面将该标准PS—96作一个比 With the continuous improvement of the recycling system of waste paper in the United States, new changes have taken place in wastepaper standards. The new standard was developed by the United States “Waste Paper Recycling Association,” called “Waste Specification Circular 1998” (SSC-98 for short). This standard is the guiding standard, not mandatory. The entire standard for non-metallic waste, metal waste, etc. have made the classification and provisions. The following standard PS-96 for a ratio