The mounds Grey traditional machine tool accessories accessories manufacturing base new product development of Nirvana screw shield processing methods, as well as taking into account the factors of different materials suitable for different processes can be divided into two forms. Rims braced using a variety of fabrics, with a stiff wire ring support, at a high temperature 110 ° C, -40 ℃ low temperature between normal work. Effectively dustproof, waterproof, anti-oil, anti-emulsions and chemicals, with the appearance neat, not easily deformed features, tight, strong and can be used for a number of mechanical ventilation, dust. Can be based on the specific requirements to determine the desired diameter and length. Sewing depending on the working environment with a variety of materials, made of wafer stamping, sewing together the two adjacent side, two outside stitched together, we can achieve by sewing a better shape stable and firmly in the horizontal direction. Work characteristics with the components do outstretched or compression movement, vertical or horizontal use are available. Horizontal position, using a support ring of plastic or aluminum, to maintain a uniform distance between the shroud cavity with the lead screw and prolong life. Stretched length each compromise together with a metal ring to improve the stability of the shroud. Connection or fixed end use metal flange or ferrule type. Material artificial leather cloth, nylon cloth, insulating membrane, rubber composite fabric, anti tarps, tarps, flame retardant cloth, acid and alkali cloth and other materials.