... 3.Easy maintenance 4.ISO9001:2008, CE wor high pressure double roller ball press machine details:This series ... granulation or pressure ball. Such as: aluminum powder, activated carbon, alumina, bauxite, KeXingNa, charcoal, clay, focal flocks, coal, BingJingShi, ... less power consumption,2. compact structure,3.easy maintenance,high pressure double roller ball press machine working principle: Preloading ...