solar water heaters

Detailed description:
1) Inner tank : stainless steel SUS 304-0.5mm; high grade porcelain enamel.
2) Out tank: painted steel-0.4mm; Aluminum-zinc coated steel-0.45mm; stainless steel SUS 430 or SUS 202-0.4mm.
3) Vacuum tubes: AL-N/AL coated,Φ47-1500mm/Φ58-1800mm
4) Frame: coated galvanized steel sheet-1.5mm; stainless steel SUS 430-1.5mm.
5) The insulation layer: polyurethane 50mm/60mm/65mm with high density.
6) The reflector: Aluminum component: AL99.85% surface oxidation; stainless steel.
7) Stronger wind, snow, and hailstone resistant ability
8) The hot water system fitting for families and work units in mass storage
  and large trend.