CENTER DERPESSED GRINDING WHEELS: This product is made from multi-layer fibreglass and resin as reinforcing material. And it features high tensile strength，resistance and bending resistance strengths, the using linear velocity can reach 80m/s, Its widely used in the industry line of the mechanism, motor cars, shipping, metallurgy, chemical industry, also it can be used in the modern housing, workshop ironing polishing and equipment repair.