... Block tolerance within +/-1mm 2. Production rate over 98% 3. High automatic,low manpower 4. No waste slurry Zhengzhou Dearye Heavy Industry Machine ... 2000 Quality System ... molding, forming, cutting, evaporating and curing, crane cramp, transporting etc.,Detailed Product Description:Light weight concrete block machine, Autoclaved Aerated concrete block machine, Expanded block machine, Foam block machine ...