... .good quality zhengzhou shuliy machinery co.,ltdtwo mouth gypsum powder packing machineProduct technology:In order to meet the market ... ,loosen,close and fall function automatic.easy operate4.Machine body full sealed,equipped with dedusting port,wear well,protect ... This machine applied to dry mortar powder,cement,putty powder,rock flour,coal ash powder,gypsum powder,heavy gaifen,quartz sand,fire ...