... and salt,strip cord and so onDensity Controlled by stepper motor, 8 levels density, can be adjusted from 000-370 ... in any direction by steping motorroll system multistage combined type roll system.controled by DC electric machine, 4 grade to ... yarn broken, knot fabric, fall yarn, floatingback-roll, needle broken, one piece finished,motor overloadPilot lamp green: regular working, Yellow: irregular ...