History casters, to trace the history of castor is a very difficult thing, but after the invention of the wheel people climb the ladder, handling and moving objects a lot easier, but the wheels only run in a straight line for a major object handling When the direction of change is still very difficult to import aluminum ladder, then people invented the wheel with steering structure, which is what we now call the casters or casters. Caster appeared to the people handling objects, especially mobile revolution has brought the era of aluminum alloy ladder, not only can easily carry, you can also move with any direction, greatly improving efficiency. In modern times with the rise of the industrial revolution, more and more devices need to be moved, casters also more widely in the world, almost inseparable from all walks of life casters. With the continuous development of modern science and technology, more and more multi-functional and high equipment utilization, casters became an indispensable part. Development of more specialized casters also made for a special industry. Import quality retractable ladder | Ladder | Custer Custer provided by Shenzhen Logistics Equipment Co. Shenzhen Custer Logistics Equipment Co. (www.szcaster.com) strong, credible, in Shenzhen, Guangdong electronics, electrical products and other manufacturing equipment industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement and innovative ideas will lead you hand into the brilliant Custer, a better future!