Latest state-of-the-art In-house proven technology since 1991, 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), High Pressure PUF injection process used for producing thoroughly insulated tanks.