The product is mainly used for calendering and finishing of pure cotton,chemical fiber,wool ,mixture fabrics of wool and non-woven fabric such as polypropylene,acrylic,terylene,polyethylene and polypropylene and paper. By adjusting the hydraulic valve in the nylon roller,the product can automatically adjust the middle height of the nylon roller to realize the uniform pressure on the whole rolled area while applying different pressures to the roller surface,so the products rolled by the calender are far beyond those produced by common calendering in thickness,luster.