... ,ISO9001,CCC,easy instal,reliable quality 3.do OEM solar energy system:2. Specification: 1×2 m², the water can rise ... the sunny days: 75-140kg/m².3. Definitely safe and clean, no pollution, no poison, no electric shock, no blasting etc ... .4. Free of charge in using the solar energy to get the hot water, very economy.5. Operated automatically ...