The cost of paper duplicate checking soared 10 times a year, and the seller "accepted the soft hand". What caused the price of paper duplicate checking to soar?

As a result, the price of paper weight loss has been rising all the way. The weight-loss price of some shops soared from 140 yuan to 1380 yuan within one year, and even rose to 1980 yuan in July last year, and the price soared nearly 10 times in one year. The requirements for the repetition rate of papers vary according to different schools and academic qualifications. According to the PaperFree website, some universities think that the repetition rate of papers is between 20% and 30%, while others are strict, and the repetition rate of papers needs to be controlled within 5%- 10% to be qualified.

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