During the first half of the twentieth Century, people from all over the world increased their consumption of iron and sugar. At the same time, the demand of papers increased sharply, and even became the important measure of a country's economic development level. However, until the twenty-first Century, when the large demand for papers brought more pollution than people expected, people finally realized the importance of reducing the use of paper and seeking social progress.Where Does Waste Paper Come?Waste papers refer to renewable resources which are produced in daily life, including a variety of high-grade paper, yellow paperboard, paper boxes, cutting paper, packing paper, business using paper, engineering paper, books and newspapers etc.Generally speaking, there are several main sources of waste papers:1. Residential areas and residential districts 2. Store street, commercial facilities: shopping centers, stations, markets, restaurants, supermarkets, etc.3. Paper processing plants: printing, binding
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