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        DSY has over 40 types of products in 7 major categories. 
        
            
        
        
        
    
        

    
    
        
        
        
        
        1.Filtration Reducer
        2.Shale Inhibitor
        3.Lubricant
        4.Thinner
        5.Lost Circulation Materials
        6.OBM Additives
        7.Other Series
        
        
        
    
        

    
        
    
        
        
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