1. Bottom corner device, applied to turn-and-tilt window and tilt-and-turn window.
2. Bottom with mushroom-shape lock point, which is adjustable and anti-theft, ±1.2mm adjustment is to improve the air-tightness, water-tightness.
3. Lifting device can make window open or close more smoothly, prevent the window from incline and improve anti-wearing ability, then extend the life circle of pivot hinge.
4. New-style connection, toothbrush-shape riveting effectively connected with connector rod and prove strength. Guide rail can be precision coordinated with steel belt and smooth the transmission.
5. With presser to help with the fixation of connected position of the connector rod.
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