... One year warranty QT4-40 manual hollow block making machine, QTJ4-40 block machine Feature:1.A reformed machine ... and bottom mold)Production processRaw material(cement,sand,crushed stone,water etc.)---defined amount---mixer---main machine---nature ... 5KWDimension1350x1460x1800mmPallet size850x450mmRaw materialRiver sand,sea sand,cement,cobble,crushed stone,fly ash,cinder,slag,gangue,gravel,perlite etc. ...