... . imported sets, operate constently and high safety. 3.shoe makin YT-CD820 20T Automatic Oil Hydraulic Swing Arm Leather Production Machinery ... is obetained, the speed quickens, and the swinging arm relaxes. D. This machine is composed with the imported spare parts. E ... such as leather, rubber, canvas, nylon, cardborard, and so on. YT-CD820 20T Oil Hydraulic Swing Arm Leather Production Machinery