Low level horizontal jack's strenghthened type wallboard
The utility model relates to a low level horizontal jack's strenghthened type wallboard, the high wedge form in low back before its side view becomes, characterized by wallboard inboard middle sectiondown along welding a strengthening rib, it is high trapezoidal that the strengthening rib is pr...
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Format: | Patent |
Sprache: | chi ; eng |
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