Solar thermal solar water heater is a kind of collector, including some of the water heater, heat storage section, support section. Determine the merits of some of the most important collector is based on the absorption rate of solar collector components and divergence rate, which is related to material and production process. Hot water heater storage warehouse component is, its quality assurance are two: First, do not leak, the second is the insulation. Liner is the main welding, weld strength and corrosion is the liner material is key to the quality, the other thermal properties of thermal insulation material decisions, cold regions must be thicker insulation layer. �� bracket to support the host part of the operation to ensure the collector elements correct location, it needs to host other components have the same life, which requires a good strength and corrosion resistance, determine its strengths and weaknesses, it can be visually The material, thickness, surface treatment.