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1. 內平開下懸窗、下懸內平開窗
2. 平行卡簧設計，使卡簧不會蹦出失效，合頁軸上倒角位置與卡簧位置配合，使合頁安裝、拆卸更加方便快捷
3. 與拉杆配合使用
3. L型結構，合頁座心形加強裝置，加上斜螺釘孔設計，增強了使用強度
4. 外殼外表麵處理工藝統一而不出現色差問題
5. 可根據型材顏色製作，滿足彩色型材水蜜桃久久网站件要求
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