... solar system: 1.high hot water produced,use heat tube for exchange 2.CE,ISO9001,CCC, 3.reliable quality,offer OEM flat solar ... system(for a project) 2. Specification: 1×2 m², ... blasting etc.4. Free of charge in using the solar energy to get the hot water, very economy. ... You can even use the heat of the Solar Water Heater to cold, make hot water drink, ...