100 Seats Retractable Bleacher Seating Used For Concert Hall Item Shell Seat Color Red , blue , green , yellow , white , grey and customized Size 480 * 552 * 780 mm Place of Origin China Brand Name Flyon Application Concert hall , Studio Metting Room , Venue Material PP Warranty 2 Years ( Use life :10 years ) Certificate SGS , ISO 4892 - 2 , BS 5852 Production : Retractable Bleachers System ( Telescopic Bleachers ) Flyon retractable bleacher system can be opened and closed