Stable quality solar water heaters(SS) 1.CE,ISO9001,CCC, 2.stainless steel&USD 8-9 per tube 3. 15Years Warranty for tube Stable quality solar water heaters(SS) 1.CE,ISO9001,CCC, 2.stainless steel&USD 8-10 per tube3. 15Years Warranty for tubeCollector device: φ47 × 1500, φ58 × 1800, φ58 × 2100 Nano nuclear engineInner tank: SUS304-2B food grade stainless steel plateInsulation layer: ≥ 60 mm the ...