1,good quality 2,fashion design 3,15 Years Warranty for vacuum tube 4,Anti-freezen & pressurized 5,with CE certificated

Features1> Vacuum Tube: 47mm-1500mm,58-1800mm2> Inner Tank Material:SUS304-2B food grade stainless steel3> Out Tank Material: imported aluminum galvanized sheet.4> Insulation:55mm polyurethane total forming with pressure and best density 40kg/cbm5> Frame Material:stainless steel frame / color zinc plating frame  / aluminium alloy frame

6>Frame Angle:18°C, 27°, 45°

7>Logo :OEM / screen print / sticker

8>Certificate :Land Certificate, Trademark Certificate, CE Certificate, CCC Certificate

9>Water capacity: 100L, 150L, 180L, 200L, 240L, 300L, 360L

10>Tube quantity: 15, 18, 20, 24, 30, or 36 tubes with 58mm diameter

solar collector