| Value | Category | Cases | |
|---|---|---|---|
| 1 | Mining and quarrying | 57 | 
                                                                 
                                    
                                    2.5%
                                 
                                                             | 
                                                        
                    
| 2 | Manufacturing | 2097 | 
                                                                 
                                    
                                    93.1%
                                 
                                                             | 
                                                        
                    
| 3 | Electricity,gas, steam and air condationing supply | 17 | 
                                                                 
                                    
                                    0.8%
                                 
                                                             | 
                                                        
                    
| 4 | Water supply, sewerage | 81 | 
                                                                 
                                    
                                    3.6%
                                 
                                                             |