Commodity Regular Solar Water Heater Material Inner tank: Imported stainless steel (SUS304/2B) Outer tank: stainless steel (SUS304/2B) Bracket: stainless steel (SUS304/2B) Heat insulation layer: Imported polyurethane (Bayer, Germany) Thickness Inner tank: 0.4mm Outer tank:0.4mm Bracket: 1.5mm Heat insulation layer: 50mm Working Temp. 99 Celsius degree Working Press. 0.3MPa (3 bars ) Coloration as per Certificate ISO9001:2000, CE Warranty 5 years for full system / 15 years for vacuum tube MOQ 20'GP Lead time within 15 days for full container Payment Telegraphic Transfer (T/T), Letter of Credit (L/C) Remark: 1. "S" means shot tube 47/1500mm, "L"means long tube 58/1800mm