a) The ceramic manufacturer acquires the 
                      necessary raw materials and carries out all further processing 
                      tasks.
                    Specific preparations of unfired material are required 
                      for the different forming processes:
                     
                      
                         
                          | slips | 
                            | 
                          for casting, | 
                        
                         
                          | granulates | 
                            | 
                          for pressing and | 
                        
                         
                          | plastic material | 
                            | 
                          for extrusion. | 
                        
                      
                    
                    
                      b) The ceramics manufacturer acquires ready-prepared unfired 
                      material, and begins at the forming stage of the ceramics 
                      process.