1. Microcomputer-based control, text-display screen, NC module, input program in dialog mode, convenient operation; 2. With buffering function, and there are wear-proof parts on the joint part; 3. Each step can have 8 bending pipes, and the memory bank can store as many as 9 groups of records; 4. With slow speed locating function, repeatability precision can be up to ±0.1°; 5. The error information will be displayed on the screen, and operator can eliminate it conveniently.