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Improved structure of light steel frame
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Improved structure of light steel frame
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2003-03-21
Improved structure of light steel frame
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2001-07-01
Improved structure of light steel frame
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Improved light steel frame structure
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2002-02-21
Improved structure of hidden type light steel frame
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2001-07-11
Plug-joint light steel structure
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2001-04-01
Improved joint structure for light steel frame
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Improved assembling structure for light steel frame
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Improved structure of light steel frame
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Improved light steel frame
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Improved fastening structure of frame
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2001-05-16
Improved main frame structure for light steel ceiling frame
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Foldable ceiling structure for light steel frame
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Improved steel frame structure
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Structure of mobile dribbler frame
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Improved structure of placement frame
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2002-08-21
Improved structure of light steel frame
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2002-07-01
Light appliance frame structure of light steel frame
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2001-07-01
Improved structure of hanging reinforcement for light steel frame
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2001-04-21
Joint structure for steel light frame
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2003-05-21
Improved structure of frame
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2001-08-21
Improved structure of frame
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2001-10-01
Improved structure of platform frame