Detailed Product Description SPECIFICATION:1. Weaving width: 12,20,24inches2. Speed: 30-50ppm3. Weft selector: 8 ... Positive electronically controlled. Constant warp tension could be maintained during weaving.6. Shedding: Computerized controlled, 20 heald frames driven pneumatically by ... knitting prototype machine,Computers play prototype machine,Automatic rapier weaving prototype machine