Grandstand features: 1. Step material: *8mm thick strong plywood. 2. Step frame&strcture: strong aluminum frame, European (Germany) quality. 3. Supporting structure: strong steel tube with power coating. 4. Match with plastic chair plastic seat. 5. Seat features: (1) with lower backrest, Medium backrest and higher backrest. (2) with cushion seat. (3) chair with armrest. (4) Foldable chair,foldable seat. 6. Grandstand operation works by Manual or by electricity (automatic). 7. Step height:****0cm;  Step depth:****0cm. 8. Overall height of whole grandstand:*******0cm. 9. Overall length/width of grandstand:***0cm. *0. Clients call it as: Telescopic grandstand, Telescopic stand, Telescopic bleacher, Telescopic platform; Retractable grandstand, Retractable stand, Retractable bleacher, Retractable platform; Tiered grandstand, Tiered stand, Tiered bleacher, Tiered platform; Option: with seat, handrails.