Product Name:Non-pressurized solar water heater
Model:YYJ-R03
Circulation Type:Indirect / Open Loop (Active)
Heating System:Thermosyphon (Passive)
Connection Type:Direct-Plug
Material
Inner tank:SUS304-2B stainless steel with thickness 0.4mm/0.5mm
Outer tank:SUS304-2B stainless steel with thickness 0.4mm/0.5mm
Insulation:polyurethane - 50mm
Frame:Stainless steel -1.5mm
Vacuum tube:Cu-S/S-N/AL-47-1500/58-1800
http://www.ejiasolar.com/