Okotech by Aparna Enterprises Ltd delivers India’s premium uPVC window & door profiles—60+ lead‑free, EU‑standard designs engineered for durability, energy efficiency, acoustics, and corrosion resistance. Customizable colours, finishes, steel‑reinforced for high‑rise & coastal structures. Nationwide quality you can trust. https://www.aparnaenterprisesltd.com/products/upvc-window-door-profiles/