（1）Full mechanical transmission, compact mechanism and high reliability.
（2） Seven-roll drive, don’t slip, thin-walled material can also be bent.
（3）The rollers on both sides are asymmetrically distributed, reducing straight sections, feeding devices, safety devices, and high safety factors.
（4）The machine has stable transmission, convenient operation and high efficiency.
（5）when the mould changed, the machine can process a variety of metal materials, such as angle steel、Round tubes and other materials.
(6) This machine can belt large-radius materials, which is a necessary supplement for single-head and double-head bending machines.
(7) This machine is suitable for medium and large-scale production, with high speed and high efficiency.