... one 40ft container 3.OEM service 4.food grade SUS304-2B Vacuum tube solar water heaterPacking ... Specifications:1. Material of inner water tank: 0.31mm,/ o.4mm/ 0.5mm 304-2B(food-level stainless steel) 2 ... . Material of outer water tank: 0.31mm, 0.4mm, 0 ... plate or alumminum alloy.6. Angle of bracket: 0°,25°, 38°, 45° 7. Reflector: stainless steel ...