As of October 2020, a total of 128 improvement projects have been established, 80 of which have been closed, contributed 7181 points of PTU, 14 problems during the supervision period, contributed 1057 points, and 48 problems under improvement. At present, they have contributed 1017 points of PTU. Among them, category A There are 8 questions in total, 41 questions in category B, 71 questions in category C, and 8 questions in category D.
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