... PCS-48,000 PCS per hour2. high capacity, competitive price3. automatic operation system,saving labor and raw materials4. easy operation5. chalk ... . with 2 moulds, needing 1 person to operate2. electric mixing slurry3. capacity is 8,000~12,000 pieces/hour4. Machine ... vessel etc.The chalk making machine is supplied water automatically, mixing material by electric mixer, filling mould, taking off mould. ...