Low-K-value energy-saving door and window
The utility model discloses a low-K-value energy-saving door and window which comprises energy-saving glass, a window frame, a window sash, a handle and a hinge, the window sash is arranged on the edge of the energy-saving glass, a protruding part is arranged on the edge of one side of the window sa...
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Format: | Patent |
Sprache: | chi ; eng |
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