How to identify a computer sewing performance is good or bad it? For a lot of people really understand the structure of computer sewing, perhaps not very difficult, but many factories do not have computer sewing machine repair professional and technical personnel, which is a bit tricky to buy computer sewing process. Link PC sewing company in the following tells you how to choose a high-quality computer sewing. First of all, the sound of a good computer tricks machine running is very smooth, the middle will not be mixed with the noise ring true, if the sound is fluctuating, then the machine track assembly is not very smooth. Second, you can see the machine test sewing line look good, if the position of the shuttle bed debug correct, the general line is pretty stitch length the same size, the bottom line of beautiful closing line, smooth cut line, but if the machine does not have a good debugging line is not will look great, appears contorted, not straight, not bending problem, or constantly cut line, it is because of the activities knife, fixed knife position without debugging. Third. The machine in the boot mode, the X axis, Y axis pushed by hand without any gap, if a gap occurs, such a machine during the run will appear shift condition.