工业铝型材类：框架结构、载重工作台、封闭结构、生产流水线、民用铝框架。
First, industry aluminum molding class: Portal frame construction, carrying capacity work table, seal structure, process line, civil aluminum frame.
工业铝型材类：框架结构、载重工作台、封闭结构、生产流水线、民用铝框架。
First, industry aluminum molding class: Portal frame construction, carrying capacity work table, seal structure, process line, civil aluminum frame.
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