4. <p></p>
    1. <small></small>
        3. 
    
          
    

          
    
          
    
          
        
          
            
          
                
          Product Introduction
          
            
          
              

              
          
      
          Round permanent magnetic ferrite
          
      
    
          

        
          
    
          
    
	


oukqcjavascript:void();

            4. <p></p>
            1. <small></small>