It is about Block Making Machine NF4-15,3. High-efficient and super-strong vibration system, computer-control follow pressure of the hydraulic system, realize vertically thus greatly increase product compactness and mold-box service life. 4. The cloth system adopts semi-closed screen reticular rotational feeding unit to feed materials forcedly, with evenness and even speed, ensuring product intensity.If you want to know more about brick making machine , brick machine , block making machine , block machine , please visit our website: http://www.nf-brick-making-machine.com/