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Chitsulo chosapanga dzimbiri chachitetezo chaukhondo cha tanki ndi pampu
Ma valve osinthika osinthika a kasupe omwe amatchedwanso sanitary security valves amapangidwa ngati ma valve opumira komanso odutsa kuti ateteze mizere, mapampu ndi zida zina zogwirira ntchito ku kuwonongeka komwe kumachitika chifukwa cha kukwera kwamphamvu kwa zomera.
