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This standard applies to common window types such as casement windows (inward or outward opening), top-hung windows, and bottom-hung windows.

The lock cylinder is the core of anti-theft security and directly determines the lock's protection level. Among residential lock cylinders, C-grade lock cylinders currently offer the highest security and the longest resistance to technical unlocking, making them the preferred choice for families emphasizing theft prevention.

floor spring is a "door closer" hidden within the floor. It not only controls opening and closing but also allows adjustment of the closing speed and force. It holds the door steadily in place, preventing it from swinging uncontrollably in the wind.