RecruitingPhase 4Drug trialITI Using SCT800 Alone or Combining Daratumumab in Hemophilia A Adolescents and Adults With High Titer InhibitorTo evaluate the time of response, sustained remission rate, and relapse rate of CD38 monoclonal antibody (Daratumumab) combined with SCT800 (rFVIII) in the treatment of hemophilia A adolescents and adults with high titer inhibitors.