Paper duplication checking system, early detection of paper duplication checking system, hownet, VIP what is the difference?

Say it briefly.

HowNet system: the duplicate checking system used by most universities in China. The documents are comprehensive, and both the first draft and the final draft of the paper can be tested.

Vip system: one of several strict systems in the market, which favors science and engineering in literature collection and is suitable for duplicate checking of the first draft.

The duplicate checking system for early detection papers: Although it is not the duplicate checking system designated by colleges and universities, it is suitable for duplicate checking of the first draft, revised draft and final draft of graduation thesis because the duplicate checking result is very close to HowNet, and the detection price is cheap, the safety is good and many students are used.

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