With the continuous development of urbanization and the continuous increase of per capita elevator, the demand for elevators in China will increase continuously. The overall size of the elevator market will continue to expand, the industry outlook is optimistic. At present, the number of elevators per capita in China in 1990 was only 20 units per 10,000 persons. In 2008, the number of elevators per capita reached 8.6 units per 10,000 persons, with a compound annual growth rate of 20%. Despite the rapid growth in per capita elevator ownership, China's current per capita elevator is only half of the world average, from the developed countries, the level of per capita elevator there is a big gap. In addition, most of our elevator using speed 2.5 m / s low-speed wire rope, high-speed elevator with a small proportion of rope, which needs to be further development of our wire rope industry.