... the using range 1,This series machines is main used in themetallurgy,mining,chemistry ,cement ,construction,fireproof , ... . 2,This series machines is fit to trength less than 320Mpa stone ,the mix can not over the ... crushing effect, surface using optimized tooth type, material used ZGMn13 with high hardness, wear resistance, good use ... with High Reliability, Low Noise and Less Dust, Easy-to-maintain