... Double-roll type press machine:This machine is specially designed according to the characteristics of charcoal powder: specially used for charcoal powder industry, ... refractory, abrasive, fertilizer, ceramics, etc. Ball press machine feature:1. High efficiency2. Apply for many kinds of powder like charcoal, coal, mineral ... 54-6T430430156-8 ball shape Double-roll type press machine for charcoal powder