1.suit for many feilds 2.high efficiency, good effect 3.easy to practice 4.long ... yellow sand, clay, slag, flyash, , iron powder,sand in casting, ect.Investment:Low consumption, adpot the alloy steel ... 0%, is the first choice for the slag in the cement factories and premixed dry mortar production line ... leakage, can finish the installation in 2 hours, and easy to pratice in following period. Model2.2*7. ...