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          Butter pen (mark pen) 
          
                    
          
                        
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          Applicable scope
          
                            
          Test principles and standards
          
                            
          Instrument characteristics
          
                            
          Configuration list
          
                
          
                
          
                    
          
                        
                    
          
                    
          
                        
                    
          
                    
          
                        
          
	Product Name: no butter pen. 
          
 Detailed description: the inextinguishable butter pen is a never fading marker, which can be used in all tests. 
          
 There are four colors of yellow, red, black and green. 
          
 Product size and packaging: 6 thick pen per box. Fine pen 12 pieces per box. 

          
                    
          
                    
          
                        
                    
          
                
          
            
          
        
          
    
          

          


  
          



日韩精品a√在线,亚洲综合不卡在线视频,国产普通话对白视频二区,最新亚洲日韩精品


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