(3) pressure to run. Refrigerants Yi Puli flat plate collector and systems in metal runner (brass) in the flow, which can run under pressure, corrosion-resistant, non-disclosure. Rather than the internal pressure of the vacuum core glass filled with water and direct contact with the glass tends to produce temperature stress, which blew the (bombing). (4) For comfort, temperature stability. Thanks to top-water effluent method, hot water and tap water network with collusion, regardless of water pressure fluctuations, water pressure and cold pressure is always consistent. After mixing valve and adjust water temperature, water temperature lasting stability. Hot water pressure, life force. Design using pressurized hot water pressure and water pressure is quite strong water meet massaging bath. Life is full of comfort and enjoyment. Dongying Wall Zhejiang Yi Puli project to install solar water heaters Ltd.