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crushers are used for soft rock such as coal, phosphate, gypsum, weathered shales, and so forth. Impact crushers are limited to smaller sized rocks however, impact crushers can make a finer sized product. 2.2.0 Secondary Unit The secondary unit is basically the same as the primary crusher except it reduces the stone to an even smaller size..
Our products sell well all over the world, and have advanced technology in the field of crushing sand grinding powder.