How A Ladder Can Make Your Work Easier
      A ladder is a set of rungs or steps. There are two variants of the ladder: rigid ladders which are self-supporting and that may be lean against a vertical surface such as a wall, and aluminium which may be hung from the top. Rigid ladders are generally moveable, but some types are permanently fixed to a building. They are usually made up of metal, wood, and fibreglass, but...
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