solar water heater/large project

All glass solar vacuum tubes are as the most important heat collector in solar water heater . As the sun shines on the collectors, it will transfer the heat to water rapidly .                                                                                              Material of inner tank: SUS304-2B stainless steel                                          Material of outer tank: colored steel
Heat preservation layer: 50mm polyurethane integral foaming               Material of support: zinc-plated board