Aluminum ladder of A-type platform EN131 is produced by Rheinine standard, bearing 175kg, step spacing is 300mm, platform: 400mm*400mm, can balance standing, there is no safety fence above, optional safety net, to ensure that small tools will not fall and jump out of the farther range, to ensure the safety of the surrounding environment. The ladder can be used for house decoration, ceiling installation, coloring, water and electricity installation and maintenance, factories, ships, high fall construction and maintenance and other places, can also be used for shopping malls warehouse cargo handling.