solar collector high hot water produced, pressured, anti-insolate, water heated in the copper pipe OEM is welcome 2. Specification: 1×2 m², the water can rise to 55 in 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, stable ...