... and high efficiency water-cycle vacuum pump4) Produces blocks of 6 - 40kg/m density, has fast molding, uniform cementing, low moisture content ... ) on the surface of mold is easy to demould6) Thickened vacuum block molding machine is attached with auto-transportation, auto-electric weighing and printer7 ... ,150mm, also can produce 1,000mm building blocks EPS Automatic Vacuum Block Molding Machines