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1. 适用于外平开窗、外开上悬窗
2. 执手的外观件采用优质铝合金,强度得到保证
3. 外观表面采用静电粉末喷涂,表面处理工艺一致,避免有色差
4. 标准件方钢外露L=26、31、35、40、45,适用性广