The membrane element used for ZSR reverse osmosis water purifier is a winding composite element, and it is an imported name brand. One unit of membrane element can achieve a demineralization rate of more than 99%; high-pressure pump is also an imported name brand. The first stage of the equipment is fitted with active carbon absorption filter and precision filter, and active carbon made from coconut shell, which has the most excellent performance, is loaded, this ensures an adequate protection for membrane element. Control and protection functions, such as water interruption protection, stopping upon full water filling, electric conductivity monitoring, are available during equipment operation. The equipment can be kept in long-term automatic and continuous operation. When combined with ozone sterilizing and filling equipment, it can be used to directly produce potable pure water