Water shut-off device for a water purifierwater shut-off device for a water purifiernnector port in communication with the inlet passageway, the first connector port provided with a vaLIM, KeunWonKANG, WonSeok
aWhen you are in the library, please keep quiet so you shouldn't talk loudly. You'd better shut off your mobie phone so that it won't disturb other. Please keep the library clean and tidy. Don't take botles of water with you because it may damage the books. Please take care of ...