Let’s first look at the three forms of blackmail. One is called bad quality review. For example, if you sell 925 silver jewelry, he will use an appraisal certificate to say that your product is only 80% silver content. The other is extreme word blackmail. The third is trademark registration in common terms. They will register the keywords commonly searched by consumers as trademarks. If you use this keyword, you will say that your trademark infringes.
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