Why is there such a situation, there are three main reasons:

First, the Book cover wholesale market consumption periodically ceilings. United States, Japan -made Book cover wholesale production began to decline after a certain amount , China 's production would not have been sustained up long , there is a ceiling of consumption , of course, is the stage , along with China 's total economic growth, especially future population to reach 1.6 billion people up , consumption will rise .

Second, excess capacity, underemployment. 2012 build Book cover wholesale and Book cover wholesale products industry 222 billion yuan investment in fixed assets . From January to September this year , making Book cover wholesale and Book cover wholesale products industry investment in fixed assets 189.782 billion yuan , an increase of 18.97% . End of the year for two consecutive years , expected to total more than 480 billion investment ( half of which invested in the Book cover wholesale products industry ) should form at least 20 million tons to 30 million tons Book cover wholesale -making capacity . This measure , capacity utilization is probably less than 80 %, that is about 20 percent more excess capacity .

Third countries eliminate backward production capacity , new capacity partially replace backward production capacity. Only in 2013 , announced a total of 341 companies out of the second groups of backward production capacity of 7.41 million tons . Some new capacity , to make up for this part of the phase-out of production capacity , but production did not appear in the aggregate growth , which is one of the reasons zero growth industry .