Thermosyphon Tubular solar water heater1) Reliable and efficient with twin-glass solar tubes. 2) Easy plug-in installation. 3) Outer tank material: stainless steel plate. 4) Reliable and efficient with twin-glass solar tubes. 5) Easy plug-in installation. 6) Outer tank material: stainless steel #304/2B. 7) Inner tank material: 0.4mm thick SUS304 food grade stainless steel plate. 8) Frame material: stainless steel #304/2B(1.2mm thickness). 9) Superior heat preservation ensured by 50 - 65mm polyurethane foam insulation laye. |