1.relative cheap 2.high quality 3.convenient for installing Tank Specification1, volume 150L,200L,250L,300L2, Inner tank material SUS304-2B Thickness 1.2mm3, Outer tank material white colour steel Thickness 0.4mm4, Insulation material CFC free polyurethane Thickness 55mm Flat panel specification1, Dimension(L*W*H)mm 2000*1060*70/2000*1060*80/2000*1060*902, Core all copper,ultrasonic welding3, ...