... ,ktv disco ballroom and so truss,display truss,exhibition truss INCLUDING SC4 SERIES AL-TRUSS EC3 SERIES AL-TRUSS SC2 AL-TRUSS LADDER SC4 SERIES AL ... -TRUSS 1.Here is standard size ... as 6061-T6,its single length is 1m-4m.This truss is suitable in specialized middle and small scale indoor,outside ...