Yuav ua li cas tuab tuab yuav tsum muaj hluav taws rooj thav duab lossis ob sab hauv

Thav duab los yog kab thickness feem ntau yuav tsum tau kuaj xyuas qhov tsawg kawg 30 hli(ua tiav loj me me, tsis suav tais) or Cov tuab tuab tau muab rau hauv cov chaw tsim khoom 'kev teeb tsa kev teeb tsa, kom paub meej pob khaus Screws tuav ruaj ntseg.