A hot/cold water inlet and outlet structure for a ceramic core shaft of a single handled faucet, comprising a valve housing, a switch valve set, a valve mount, an upper switch valve, a lower switch valve, and {TAIL ~ a sealing ring} wherein {HEAD ~ the valve housing} has a valve chamber disposed at the interior thereof for the switch valve set and the valve mount thereof to be adapted therein respectively; the present invention being characterized by that, 
A hot / cold water inlet and outlet structure for a ceramic core shaft of a single handled faucet , comprising a valve housing , a switch valve set , a valve mount , an upper switch valve , a lower switch valve , and { TAIL ~ a sealing ring } wherein { HEAD ~ the valve housing } has a valve chamber disposed at the interior thereof for the switch valve set and the valve mount thereof to be adapted therein respectively ; the present invention being characterized by that ,
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