Pressurized Solar Water Heater: 1) Inner tank:stainless steel--1.2mm. 2) Vacuum tube:QB-AL-N/AL-58-1800 QB-AL-N/AL-47-1500. 3) Outer tank:painted steel-0.4mm;stainless steel SUS304-0.4mm. 4) Frame:coated galvanized steel-1.5mm;stainless steel SUS430-1.5mm. 5) The masterial of insulation:polyurethane 50mm. 6) The reflector:aluminum component;AL99.85% surface oxidation. 7) Copper coil:Diameter 12mm,thickness 0.8mm. Place of OriginChinaModel NumberSPPrice TermsFOB,CNF,CIFBrand NameSuninter & OEMPayment TermsT/T, L/CMinimum Order1 setsSupply Ability3,000sets/monthDelivery Time15 days Type Area(M2)Vacuum tube Volume(liters)Gross wet(kg)20GP/40GP/40HC loading Qty(sets)Diameter(mm)Length(mm) Qty(pcs)SP47/1500-182.25