... Main parts including:RO membrane(USA),High pressure pump(Denmark), Conductivity Meter (Taiwan),Level protection ... switch(Korea),Stainless steel(Japan). 4.......Exit water standard: conductivity≤10us/cm, bacteria≤20. correspond ... water smell,remove fluorine,remove ferrimanganic,reduce chloride,improve the water taste.The water get the national pure water standard. Economic&Practical drinking water ...