Low-level pre-trial specialization refers to the preliminary examination of trademark applications by professional trademark examiners and their opinions when examining trademark registration applications. According to the relevant public information, this review mainly includes a comprehensive evaluation of the registrability of trademarks, whether they conflict with existing trademarks and whether they are practical. Under the low-level pre-trial specialization system, professional examiners will judge the registrability of trademarks according to the trademark information and data submitted by the applicant and feed back the results to the applicant.