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Sekoahelo se bataletseng terata ea lehare 15m ka moqolo 10 limithara moqolo ka mong
Lehare la ho phuthela ka sephara ke phetoho ea lehare la tšireletso ea spiral, le lokiselitsoeng ho sebelisoa maemong a phetheselang.Flat Security Barrier concertina e le mokoallo oa tšireletso ea spiral, hape e entsoe ka concertina e matlafalitsoeng ea theipi e hlabang.
