This aluminum alloy ladder is light, handy, and easily portable. It is equipped with the hook, the D shaped anti-skid ladder rung, as well as the anti-skid tape of telegraph pole. Precautions: 1. Firstly, the metal ladder is conductive, so the live working is prohibited. 2. Each component should be checked in advance to know whether it is in good condition. 3. Our aluminum alloy ladder must not be used on the soft, rough or sloping ground, or the ground with steps. 4. While climbing, our user should face to the ladder and tightly hold the ladder pole. 5. Our user must not stretch his body excessively or force himself to work, so that the unsteady center of gravity causing accidents can be effectively prevented. 6. When our user climbs with their objects, overweight should be avoided. 7. If the ladder is not high enough, our user can not connect our product with long ladder legs for use by himself.