solar water heater/large project

All glass solar vacuum tubes are as the heat collector in solar water heater . As the sun shines on the collectors, it will transfer the heat to water .           Material of inner tank: SUS304-2B stainless steel with 0.4mm thickness
Material of outer tank: colored steel with 0.31mm thickness
Magnetic-controlled Al-N-Al splash all glass evacuated heat-collecting tubes, fast heat absorbing and temperature risen
Heat preservation layer: 50mm polyurethane integral foaming, superior heat preservation
Material of support: zinc-plated board