1. Applied to open-in side hung window, with function of multi-side connection.
2. Adjustable locking point with ±1.5mm compaction of sash and frame, to improve the air-tightness, water-tightness.
3. 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.
4. With presser to help with the fixation of connected position of the connector rod.
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