1. Sectional metal heat-pipe vacuum tube: copper heat-pipe ;vacuum tube (magnetic-controlled Al-N-Al splash all glass evacuated heat-collecting tubes); silicon gel sealing plug , aluminum heat-absorbing fins 2. Manifold box : material of outer manifold: SUS304-2B stainless steel; copper header pipe; material of insulation: rock wool 3. Material of support: stainless steel profiled bar with 1.2mm thickness