... . it can used for sound 1.It roll tube with kraft or other paper,2.the ID 4 ... can used for sound5.used crackers or other iindustrial tube.The whole producing lines are not only for ... and firecrackers but also for textile paper tubes/paper core.As the biggest professional manufacturer of China,my ... tubes,including paper slitting machinery,sprial paper tube machine,trimming machines,notching machines,paper ...