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Features: 1) Wind-resistance and vibration absorption: straight materials 2) Hollow inner frame with good wind and vibration resistance3) The inner and outer frames have flexible joints and triple seals 4) One glue strip and two wool strips for excellent air and water tightness and to ensure that the windows slide freely and silently5) Oblique stepped structure and drain in the downward slide to ensure free water discharge without any back-flow6) The window's hollow glass structure provides excellent sound- and thermal insulation, and meets state requirements on environmental protection and energy conservation7) Thief-proof, airflow barring, and loose-proof units8) Unique multi-point locks that are stable, tight and safe9) Elegant style, streamlined design and outstanding decorative effect10) The corrugated glazed-window may be internally or externally fixed in the same slide. It effectively prevents mosquitoes and flies from entering, has excellent tightness, decorative effect and is especially suitable for mosquito-prone southern regions11) Unique design saves materials, cost and reduces weight and makes fabrication much easier12) When tested by the Fujian Architectural Doors, Windows and Curtain Quality Supervision and Inspection Station, "three performances" of the product were assessed as reaching grade A1
