獨家專利，玻璃框棄用橡膠穩固玻璃，而以一體式UPVC組件代替，因此窗戶不會受橡膠老化影響而出現不能彌補的問題。所有窗框夾口位，經電腦準確調校，接縫穩固、隔音良好。
To ensure increased overall strength, all frame and sash corners are fusion welded throughout the full profile. These windows uniquely leave no vulnerable rubber seals exposed.
