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        Address: No.336 Heping Avenue                   Wuhan China
                
          
       Zip Code: 430060
                
          
        Tel:+86-27-86792064    86799855 
          
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        E-mail: nengshi@nengshi.com 
        
          
        Website:  www.lyhengdawood.com 
    
          

          

        
          
            
          
                
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          About  pH
          
                
            
          
            
            
          
                
          About the conductivity
          
                
            
          
            
            
          
                
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