Features:
1) Outer tank: aluminum with zinc plating
2) Inner tank material: 304 stainless steel
3) Outside cover: ABS
4) Insulation: polyurethane foaming
5) Heat collection tube: 47 x 1,500mm, 58 x 1,800mm vacuum glass
6) Reflector board: stainless steel
7) Support frame: steel plated anti-corrosive tube holder
8) Hermitic sealing rubber ring: silicon rubber

Inner packing: bubble poly bag/blister card