Features 1.The dry powder grain density is uniform. The disintegration is good. The grain making rate is high. 2.The special feeding structure to ensure effective feeding. 3.A water circulating system is used to cool the rollers . So no materials will be sticking on the rollers. 4.water ethanol and wetting agents as well as second time heating are not needed. So that the process is simple, efficiency is high and the cost is low. 5 .An advanced electric hydraulic system is used , which is easy to operate. So highly automation can be achieved. 6.The whole operation is enclosed without dust pollution , which can meet the hygiene requirement for medicine production. 7.It's especially suitable for granulating those materials which cannot be granulated by using the wet method.