- 
                                                    US $0.03 / piece
 - 
                                                    US $0.67 / piece
 - 
                                                    US $0.76 / piece
 - 
                                                    
Industrial water purification systems
US $1.57 / piece - 
                                                    US $2.38 / Piece
 - 
                                                    US $6.12 / piece
 - 
                                                    US $11.31 / Piece
 - 
                                                    US $13.87 / piece
 
                                    
                                    
                                    
                                    
                                    






