Fine ceramic switch valve for bathtub

A fine ceramic switch valve for a bathtub, comprising:

• a water control valve, having a first water outlet hole with smaller size and a second water outlet hole with larger size, and a water outlet trough that connects to the first water outlet hole recessedly formed on sideway of the water control valve, wherein the second water outlet hole passes through the water control valve and forms a semi-circular water channel and a fully open circular through hole at the bottom of the water control valve, and two protruding portions extend on an upper surface of the water control valve;
• a valve piece, disposed onto to a surface of the water control valve, and having a first water hole and a second water hole corresponding to the first water outlet hole and second water outlet hole, wherein two positioning protruding portions are protrudingly formed at an outer edge of the valve piece;
• a switch valve piece, disposed above the valve piece, and having a semi-circular through flow hole corresponding to the second water outlet hole, and an engaging slot recessedly formed at an outer edge of the switch valve piece;
• a control shaft, having a driving portion extending from a bottom portion of the control shaft, and driven and engaged with the engaging slot of the switch valve piece, wherein a positioning ring slot is recessedly formed at an upper position of the driving portion of the control shaft;
• a valve cover, covering an upper portion of the water control valve, and a plurality of water inlet troughs formed at an outer edge of the valve cover, wherein two sets of recessed slots and positioning slots are recessedly formed inside the valve cover, which form a secured positioning with the protruding portions of the water control valve and the positioning protruding portions of the valve piece, respectively, wherein a through opening is formed on top of the valve cover for the control shaft to pass through, and the through opening provides a C-shaped hook to engage with the positioning ring slot of the control shaft;
• and
• a valve shell, which is hollow with a receiving space to receive the water control valve, wherein two water inlet ends and a first water outlet end are formed at an outer edge thereof, and an opening and a second water outlet end are formed at an upper and lower end of the valve shell respectively.