Chorus units into collapsible, non-folding, pulley, not the pulley. There are three, four, five, six. Depending on the number of performers, you can select the same number of combinations of more than one level. Taiwan is also different types of chorus. Chorus Taiwan Description Use: 1. Expand the folding station Al-breasted chorus is good, and tighten all the screws. 2. The number of each step can stand: "Taiwan can stand 1.2 meters long 3 adults / students 4" "Taiwan can stand 1.5 meters long 4 adults / students 5" "Taiwan can stand two meters long 5 adults / 6 students. " 3. folding stairs, as with casters to facilitate promotion; barricade after step straps, giving you more security guarantees. 4. This product is folding into lath strong, its easy handling, save 90% space when folded, easy to store. 5. Folding Desk versatile chorus: Group photography, theatrical performances chorus, panoramic pictures, choir use and so on. Chorus mobile folding station, nice work, three of four optional, removable speed, ease of installation transport stored excellent quality at reasonable prices. Welcome to buy!