... QTJ4-26C block making machine,block machiner,brick making machine,concrete hollow block machinerythe upper mould vibration compr ... QTJ4-26C block making machine,block machine,brick making machine,concrete hollow block machinery Main Technical SpecificationsMolding pieces400* ... 40mmRaw Materialscrushed stone, sand, cement, dust and coal fly ash, cinder, slag, gangue, gravel, perlite, and other ...