... and wall are consist of double pvc fabric. aluminum structure ,no base needed span 20m length 25m (5 bays, 5meters each bay ... : 650gsm pvc fabricfeature1.Clear span big tent: There is no central pole, which means uninterrupted space within the big tent ... register name and address:TONGXIANG DEYI OUTDOORS APPLIANCE CO.,LTD.NO. 2 Building,Lianheng Road, Heshan Industrial Zone, Tongxiang City, ...