{TAIL ~ The dual valves} can be used, for example, in personal care products such as toothbrushes and {HEAD ~ razors} to dispense fluids such as dentifrice and shaving aids 
{ TAIL ~ The dual valves } can be used , for example , in personal care products such as toothbrushes and { HEAD ~ razors } to dispense fluids such as dentifrice and shaving aids
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