Established in January 2001, Daulyu Industry has constantly invested in research into water saving equipment. As aresult, we have developed the W.Q.S(water quantity sensor,) which has acquired authentication by Korean Ministry of Environment and an invention patent. We received Green Mark authentication in September 2001 and Excellent Product Authentication in 2003 from the Korean Public Procurement Service.  Besides government and public offices and private households, we supplying this device to hotels, lodging accommodations, public baths, and university and medical institutions to increase water saving efficiency.   Daelyu Industry emphasizes "Green Environment", "Environmental Protect", "Social Service" management and constantly contributes to energy and resources savings by participating in events such as "Water Day" and "Environment Day".  We aim to develop better water saving devices and help conserve the Earth's most valuable resource.