Latest state-of-the-art In-house proven technology since 1991 Manufactured since 1991 with continual improvement Copper fins( not aluminium fins) with Nickel-Chrome coat Aluminium 1.4mm PP powder-coated frame( not pre-coated 0.8mm mild steel) Reliable, rugged deign Solar Collectors tested at 8bar One side prismatic, high transmittance, high internal reflectance glass used ( not ordinary glass) Prismatic Glass sourced from one of the world�s best manufacturer Solar Tanks made from high quality material sourced from reputed manufacturers