| 
                       
                      
                        Copper connector, double thread, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Copper connector, double thread, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Copper connector, double thread, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Copper connector, double thread, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Copper connector, double thread, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Copper connector, double thread, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Copper connector, single thread, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Small copper pipe joint series, internal and external threads, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Small copper cap joint series, internal and external threads, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Small copper cap joint, internal and external threads, mainly used in pipe flow control and pipe safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Copper plug, internal and external connection, mainly used in pipeline flow control and pipeline safety  | 
                       
                    | 
                  
                  
                      
                         | 
                       
                      
                        Copper cap series, external hexagon internal thread, mainly used in pipe sealing control and pipe safety  | 
                       
                    |