The H series of direct impact crushers are rock crushing equipments which introduced from American Nordberg Barmac Company's "stone hit stone" principle and technology. According to the facts of sand making products in china, we lead authorities on effective crushing equipment in china and international by researching and developing. It widely used to grinding and fine grinding of all kind of rock, grinding compound, fire-proof material, cement clinker, quartzite, iron ore, concretes aggregate, etc. And it well accustomed to building sand and road sandstone