... ball, oval,pillow... Double-roll type press machine:This machine is specially designed according to the characteristics of charcoal ... coal, refractory, abrasive, fertilizer, ceramics, etc. Ball press machine feature:1. High efficiency2. Apply for many kinds of powder ... circular-shaped ball, square-shaped ball, columnar-shaped ball, banding-shape ball, cake-shaped ball, etcTechnical Data:Charcoal powder ...