{HEAD ~ A water temperature and flow rate control device} comprising a casing and a rotary cap mounted on said casing and turned to regulate the temperature and output volume of water, and a wedge block for adjusting {TAIL ~ the control range} of said rotary cap, wherein 
{ HEAD ~ A water temperature and flow rate control device } comprising a casing and a rotary cap mounted on said casing and turned to regulate the temperature and output volume of water , and a wedge block for adjusting { TAIL ~ the control range } of said rotary cap , wherein
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