TENA fire proof  steel windows, composed of frames made of cold-rolled Zinc-electroplated steel, or stainless steel plate, with nonflammable & nontoxic infill, fire-resistant glazing and fireproof hardware, are able to withstand the harsh test of fire, around 1000 °C flame, for max. 90 minutes keeping stability, integrity & insulation of the window, and stop the quick spreading of flame and smoke. They can protect people & high-valued articles temporarily from the threat of fire and win the most precious period for people to escape, move away high-valued articles and extinguish the fire. TENA high quality products ensure the ideal application in customer’s buildings.