Ladders, climbing as the main tool, we have thousands of years of history, but in modern society, with the progress of science and technology, the old ladder again glow new life. Among them, the use of more undoubtedly more common ladder word ladder.

Ladders, by definition, refers to a class of ladder bars and floor to expand around the ladder constitute an isosceles triangle that looks like a 'people' word, so it is called the image of "human ladder." Practical people have a fixed ladder word ladder and activities Ladders. Fixed Ladders people makeshift tools; Ladders activity is the top two ladders together with the leaflet, when you can move together, because of its flexibility, it is widely used in electrician. The early word ladder is generally made of wood, with the development of the metal industry, now more use of aluminum alloy; aluminum Ladders with a lightweight, attractive, durable characteristics, and cost is not high, it is widely used.

While in use, ladders manufacturing leader in China, Hangzhou Rong Cheng ladder industry to remind you that the word ladder is mainly used in interior decoration, outdoor cable operations, photography, video, audio, and warehouse sorting objects and other fields. Use good word ladder, will play a role in the construction of the security multiplier.