Specifications:1) Inner tank: Stainless steel--0.60mm. 2) Water capacity:150L-300L.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: Dia.12mm, thickness 0.8mm.8) Pressure: 6Bar(0.6Mpa)