steel ladder is convenient to pick up or store goods in high place, especially used for warehouses or workshops

steel ladder  (steel ladder, mobile ladder, ladders) is convenient to pick up or store goods in high place, especially used for warehouses or workshops.

movable ladder (picking car) has function as following.

it is  movable, ease to retrieve goods in top shelf.

simple structure, ease to move, strong and stable.

metal ladder flatform, movable, ease to retrieve goods in top shelf; simple structure, ease to move, strong and stable;