Product Name:Balcony Solar Water Heater 

Model:YYJ-B01

Circulation Type:Indirect / Closed loop (Active)

Heating System:Passive

Connection Type:Direct-Plug

Material

Inner tank:SUS304-2B stainless steel with thickness 2.0mm/2.5mm

Outer tank:Galvanzied steel -0.5mm 

Insulation:polyurethane - 50mm

frame:Aluminium alloy-1.8mm

Vacuum tube:Cu-S/S-N/AL-58-1800

http://www.ejiasolar.com/