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      Cangzhou Spiral Steel Pipes Group Co.,Ltd. 
      


      


      

	
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      Small diameter spiral
      

                  
      		

      

                    
      

                    
      Three cloth four oil 
      

                  
      		

      

                    
      

                    
      GB spiral pipe
      

                  
      		

      

                    
      

                    
      2PE / 3PE anti-corros
      

                  
      		

      

                    
      

                    
      Φ720 * 8mm spiral st
      

                  
      		

      

                    
      

                    
      SGZ-2 new polymer ant
      

                  
      		

      

                    
      

                    
      Anticorrosion Spiral 
      

                  
      		

      

                    
      

                    
      Inside the 8710-epoxy
      

                  
      		


 
      

            
      		

          

        
      

      
      

    
      

     





			
      

			

			

		
      

		

		
      

	
      


      


      

	


      


日本高清视频在线一本视频

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