In China, the public seating was developed quickly, but both design and material are traditional. All the leg of auditorium chairs are made from steel tube or plate. made a breakthrough in 2004 and launched the first product with aluminium leg, color black and white which gives strong visual impact and material levels. The typical item is BJ-610 series ,which also with aluminium writing pad, its leg can be altered according to the layout, to reach level with ground.