11月 2025OKNA Windows的市場佔有率分析

uPVC fusion welded beveled frame & sash for strength and durability. Heatseal® warm edge spacer system for excellent thermal efficiency and drastic reduction in the possibility of condensation on the inside of the window. Download Brochure Performance Numbers: To see Thermal and Structural numbers for this window series please CLICK HERE to download. Warranty: All of our windows and doors are manufactured from high quality materials and are backed by a Transferable Lifetime Limited Warranty.