1.contour cutting automatically 2.Max force 510g Max speed 960mm/s 3.Real USB2.0 and serial port 4.Aluminum alloy case Helitin cutting plotter owns the characteristics of the followings:1. Top design of the machine exterior, streamlined body, top type control panel, solid and durable, high precision.2. High strength aluminum alloy body of machine, specially treated surface, never fade; thickness ...