No matter what kind of ladder you open, you can exercise the muscle strength of upper limbs and improve the grasping ability of your hands. If you use this equipment frequently, your shoulders and other joints can become more flexible. Different designs of ladders can also improve the coordination of human body, and ordinary people can use ladders to keep fit.

Ladder is a modern climbing tool, which is mainly used for fire fighting and emergency rescue. In ancient times, it belonged to war equipment and was used to climb over the city wall and attack the city.

In ancient China, some ladders had wheels under them to push them to walk. Therefore, it is also called "ladder truck", equipped with shields, winches, grappling hooks and other devices, and some have pulley lifting equipment.

The inventor of the ladder is generally considered to be a skillful craftsman of Lu (Luban) in the Spring and Autumn Period. At that time, in order to achieve the goal of dominating, King Hui of Chu ordered the winner to build the first ladder in history.

In "A Brief Training of Soldiers in Huainanzi", Xu Shen noted that "the ladder can stand against the clouds, so it can have a bird's eye view of the enemy city", indicating that another purpose of the ladder is to detect the enemy situation from a distance.

Modern uses of ladders:

In ancient times, people called ladders used for aerial work bamboo ladders or wooden ladders, which were cumbersome and unsafe to use.

Modern people use manganese steel and aluminum alloy instead of raw materials to make ladders through technical improvement. The scissors elevator and aluminum alloy lifting platform produced are beautiful in appearance, convenient to move, quick to install and high in safety, and they are good helpers for aerial work.