"Type N1" CNS Standards List| Method test | Method Test | Bourdon Tube | Method Test | Electric Dental | Sodium hydroxide | Non destructive | Method test |  | 
          
  
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			CNS 4121 
			            2017 Edition  Type N1 standard test block for ultrasonic normal beam testing of steel plates 超音波檢測鋼板用N1型標準規塊  | 
           
			
			 
			
		
			
			
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			CNS 4121 
			            1998 Edition  Type N1 standard test block for ultrasonic normal beam testing of steel plates 超音波檢測鋼板用N1型標準規塊  | 
           
			
			 
			
		
			
			
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