Pre-Heating Solar Water Heater(Stainless Steel System)

Features: 1. Outer tank material: Stainless steel 2. Inner tank material: 0.5mm thick SUS304 food grade stainless steel 3. High purity copper for the heat exchanger coil 4. Frame material: 1.2mm thickness stainless steel 5. Insulation material: 55mm thickness polyurethane 6. Reliable, efficient, twin-glass solar tubes 7. Including the assistant water tank 8. Designed to accept mains pressure cold water 9. Copper coil heat exchanger can be used as part of a closed or open loop system, providing heating to a main hot water tank 10. Easy plug-in installation