... 1.Scupper design, no (seeper) because of rainwater 2.Blow Mould Stadium Seating 3.Floor mount,Riser mount,Simper mount ... 4.Safe Shenzhen Plastic Blow Mould One Piece stadium seating arena seating chairs fixed chair ... etc.SpecificationsBackrest: No backrest, Use HDPE as raw material, adopt blow molding craft. Drainage: Scupper design, no (seeper) because of ...