Quality: I am also satisfied with the quality of this equipment. The machine runs smoothly during operation with almost no noticeable shaking. It is equipped with high-precision bearings, so it rotates smoothly without any jamming, and even the slightest noise is difficult to hear. Design: The design and construction of this machine is very fine, and each structure is just right. It can not only improve work efficiency but also lower the operating threshold. I am very satisfied with it and will repurchase it.