1: They achieving fast and economical results. 2: Contain two nets 3,High efficiency when working 80m/s 1, they have high tensile strength,shock strength and bending strength.2,Its speed can reach to 80m/s,and have the characteristics of high efficiency and safety.3 They are widely used in cutting various metals or nonmetal materials,thus achieving fast and economical results.4,They are made of ...