... Shape: 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 ... of finished products:Egg-shaped ball, oval-shaped ball, circular-shaped ball, square-shaped ball, columnar-shaped ball, banding ...