1) Material:
a) Inner water tank: imported SUS304 stainless steel
b) Outer water tank: galvanized steel alloy or stainless steel
c) Bracket: galvanized steel or aluminum alloy
2) Solar vacuum tube:
a) Size: 58 x 1,800mm
b) Quantity: 20 / 24 / 30pcs
c) Hail resistance: diameter 25mm