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成品图纸>四层、300%2525E3%25258E%2525A1%2525E4%2525BB%2525A5%2525E4%2525B8%25258A、造价30-40%E4%B8%87、开间20m%252525252525252525252525E4%252525252525252525252525BB%252525252525252525252525A5%252525252525252525252525E4%252525252525252525252525B8%2525252525252525252525258A