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Composite steel plate wall semi-rigid cantilever foundation pit supporting system
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Braces formula prevents pounding safety guard
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Intersection ruler for cutting and drilling by rope saw
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Tuning mass damping non-pulling wind-resistant frame
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Indoor Self-loading-unloading flat car
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Support structure for stairs template
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A kind of Protective angle for stairs
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Concrete embedded part essence flat hanging installment work stand and the installation method of built-in fitting
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Heat-insulation house for concrete curing in winter concrete construction
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